Greetings all

We have sharepoint site setup which is running fien since a year  now with one WFE  web server, db server, ad  server

We received  a problm recently when we received blank screen after entering login details.

Upon restart of website via IIS  it resumed.

I am still finding what are causes and which event log would help to identify errors?

• Edited by Dipsu Monday, November 03, 2014 4:58 PM spelling mistake in subject

To solve this you need to add a registry key to all the web front end servers in your farm.

   1. Open the Registry editor, Start >> Searchbox >> Regedit (make a SnapShot or registry export first).
   2. Go here,HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
   3.  Add a new DWORD vallue and name it DisableLoopBackcheck.
   4. Enter the new DWORD key and give it a value of 1.
   5. With every registry change you need to reboot your server and beware all clients will be thrown off.

When you test it you see its working but maybe your site continues loading and loading forever.
In that case its not yet added to the trusted site zone of your browser.

https://dwan5150.wordpress.com/tag/ie-shows-a-white-screen/

Rahul

Thanks, I would like to add this is not happening on single server or desktop.

This happens all of sudden and none of users on internet users are able to see any content once they fill up login authentcation prompt

note site is using basic authentication.

would like to add that ,HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\DisableLoopBackcheck is alreday set on WFe server to 1.

How many times you get Credential prompt before screen goes b

Can you clear the timer cache on all the servers?

Since we do not know what exact time this situation started, We checked logs for last 12 hours wehn this was reported by visitors.

not so sure  if these are related.

Found following  Web Controls warnings and publishing cache information message.

Log Name:      Application
Source:        Microsoft-SharePoint Products-Web Content Management
Event ID:      7362
Task Category: Publishing Cache
Level:         Information
Keywords:      
User:          domain\spapppool
Computer:      wfe1
Description:
Object Cache: The super user account utilized by the cache is not configured. This can increase the number of cache misses, which causes the page requests to consume unneccesary system resources.
 To configure the account use the following command 'stsadm -o setproperty -propertyname portalsuperuseraccount -propertyvalue account -url webappurl'. The account should be any account that has Full Control access to the SharePoint databases but is not an application pool account.
 Additional Data:
 Current default super user account: SHAREPOINT\system
 
 
Log Name:      Application
Source:        Microsoft-SharePoint Products-SharePoint Foundation
Date:          10/30/2014 6:16:04 AM
Event ID:      7043
Task Category: Web Controls
Level:         Error
Keywords:      
User:          NT AUTHORITY\IUSR
Computer:      wfe1
Description:
Load control template file /_controltemplates/15/ExcelWebRenderer.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.

Can you clear the timer cache on all the servers?

Hi Rahul

 i missed this update earlier, will it affect current online user sessions? Currently login sessions are working fine.

So we can either schedule to clear cache in off peak hours.

>>Can you clear the timer cache on all the servers?

Yes, do it off peak hours.

thanks, we will do that and get back

We couldnt schedule this to be on and waited for weekned.

However we again had same incident reported 8 am cst and found that event log has similar warning ( time approx 6 am cst).

Cleared sharepoint timer cache.

started sharepoint timer service again .

still website didnt show contents after authenticating.

stopped website in IIS   mapped to this web application and site contents started showing up.

is there anything else we need to enable in sharepoint logging to find  root causes.

We have pending windows updates on server , should that be causing any of these errors?

------

Log Name:      Application
Source:        Microsoft-SharePoint Products-Web Content Management
Date:          11/7/2014 5:45:04 AM
Event ID:      7362
Task Category: Publishing Cache
Level:         Information
Keywords:      
User:          domain\spapppool
Computer:      WFE01
Description:
Object Cache: The super user account utilized by the cache is not configured. This can increase the number of cache misses, which causes the page requests to consume unneccesary system resources.
 To configure the account use the following command 'stsadm -o setproperty -propertyname portalsuperuseraccount -propertyvalue account -url webappurl'. The account should be any account that has Full Control access to the SharePoint databases but is not an application pool account.
 Additional Data:
 Current default super user account: SHAREPOINT\system
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-SharePoint Products-Web Content Management" Guid="{0119F589-72D7-4EC3-ADF5-1F082061E832}" />
    <EventID>7362</EventID>
    <Version>15</Version>
    <Level>4</Level>
    <Task>1</Task>
    <Opcode>0</Opcode>
    <Keywords>0x4000000000000000</Keywords>
    <TimeCreated SystemTime="2014-11-07T11:45:04.442428600Z" />
    <EventRecordID>319506</EventRecordID>
    <Correlation ActivityID="{F2C3C99C-8E0F-60CD-507E-90CCC8B23C6A}" />
    <Execution ProcessID="12700" ThreadID="6472" />
    <Channel>Application</Channel>
    <Computer>WFE01</Computer>
    <Security UserID="S-1-5-21-521425033-3276028114-1354584634-1109" />
  </System>
  <EventData>
    <Data Name="string0">SHAREPOINT\system</Data>
  </EventData>
</Event>


Log Name:      Application
Source:        Microsoft-SharePoint Products-SharePoint Foundation
Date:          11/7/2014 5:45:09 AM
Event ID:      7043
Task Category: Web Controls
Level:         Error
Keywords:      
User:          NT AUTHORITY\IUSR
Computer:      WFE01
Description:
Load control template file /_controltemplates/15/ExcelWebRenderer.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-SharePoint Products-SharePoint Foundation" Guid="{6FB7E0CD-52E7-47DD-997A-241563931FC2}" />
    <EventID>7043</EventID>
    <Version>15</Version>
    <Level>2</Level>
    <Task>15</Task>
    <Opcode>0</Opcode>
    <Keywords>0x4000000000000000</Keywords>
    <TimeCreated SystemTime="2014-11-07T11:45:09.590620500Z" />
    <EventRecordID>319507</EventRecordID>
    <Correlation ActivityID="{F2C3C99C-8E0F-60CD-507E-90CCC8B23C6A}" />
    <Execution ProcessID="12700" ThreadID="6472" />
    <Channel>Application</Channel>
    <Computer>WFE01</Computer>
    <Security UserID="S-1-5-17" />
  </System>
  <EventData>
    <Data Name="string0">Load control template file /_controltemplates/15/ExcelWebRenderer.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.</Data>
  </EventData>
</Event>


Log Name:      Application
Source:        Microsoft-SharePoint Products-SharePoint Foundation
Date:          11/7/2014 5:45:11 AM
Event ID:      7043
Task Category: Web Controls
Level:         Error
Keywords:      
User:          NT AUTHORITY\IUSR
Computer:      WFE01
Description:
Load control template file /_controltemplates/15/SlicerRendererControl.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-SharePoint Products-SharePoint Foundation" Guid="{6FB7E0CD-52E7-47DD-997A-241563931FC2}" />
    <EventID>7043</EventID>
    <Version>15</Version>
    <Level>2</Level>
    <Task>15</Task>
    <Opcode>0</Opcode>
    <Keywords>0x4000000000000000</Keywords>
    <TimeCreated SystemTime="2014-11-07T11:45:11.384687300Z" />
    <EventRecordID>319510</EventRecordID>
    <Correlation ActivityID="{F2C3C99C-8E0F-60CD-507E-90CCC8B23C6A}" />
    <Execution ProcessID="12700" ThreadID="6472" />
    <Channel>Application</Channel>
    <Computer>wFE01</Computer>
    <Security UserID="S-1-5-17" />
  </System>
  <EventData>
    <Data Name="string0">Load control template file /_controltemplates/15/SlicerRendererControl.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.</Data>
  </EventData>
</Event>

---

We couldnt schedule this to be on and waited for weekned.

However we again had same incident reported 8 am cst and found that event log has similar warning ( time approx 6 am cst).

Cleared sharepoint timer cache.

started sharepoint timer service again .

still website didnt show contents after authenticating.

stopped website in IIS   mapped to this web application and site contents started showing up.

is there anything else we need to enable in sharepoint logging to find  root causes.

We have pending windows updates on server , should that be causing any of these errors?

------

Log Name:      Application
Source:        Microsoft-SharePoint Products-Web Content Management
Date:          11/7/2014 5:45:04 AM
Event ID:      7362
Task Category: Publishing Cache
Level:         Information
Keywords:      
User:          domain\spapppool
Computer:      WFE01
Description:
Object Cache: The super user account utilized by the cache is not configured. This can increase the number of cache misses, which causes the page requests to consume unneccesary system resources.
 To configure the account use the following command 'stsadm -o setproperty -propertyname portalsuperuseraccount -propertyvalue account -url webappurl'. The account should be any account that has Full Control access to the SharePoint databases but is not an application pool account.
 Additional Data:
 Current default super user account: SHAREPOINT\system
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-SharePoint Products-Web Content Management" Guid="{0119F589-72D7-4EC3-ADF5-1F082061E832}" />
    <EventID>7362</EventID>
    <Version>15</Version>
    <Level>4</Level>
    <Task>1</Task>
    <Opcode>0</Opcode>
    <Keywords>0x4000000000000000</Keywords>
    <TimeCreated SystemTime="2014-11-07T11:45:04.442428600Z" />
    <EventRecordID>319506</EventRecordID>
    <Correlation ActivityID="{F2C3C99C-8E0F-60CD-507E-90CCC8B23C6A}" />
    <Execution ProcessID="12700" ThreadID="6472" />
    <Channel>Application</Channel>
    <Computer>WFE01</Computer>
    <Security UserID="S-1-5-21-521425033-3276028114-1354584634-1109" />
  </System>
  <EventData>
    <Data Name="string0">SHAREPOINT\system</Data>
  </EventData>
</Event>


Log Name:      Application
Source:        Microsoft-SharePoint Products-SharePoint Foundation
Date:          11/7/2014 5:45:09 AM
Event ID:      7043
Task Category: Web Controls
Level:         Error
Keywords:      
User:          NT AUTHORITY\IUSR
Computer:      WFE01
Description:
Load control template file /_controltemplates/15/ExcelWebRenderer.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-SharePoint Products-SharePoint Foundation" Guid="{6FB7E0CD-52E7-47DD-997A-241563931FC2}" />
    <EventID>7043</EventID>
    <Version>15</Version>
    <Level>2</Level>
    <Task>15</Task>
    <Opcode>0</Opcode>
    <Keywords>0x4000000000000000</Keywords>
    <TimeCreated SystemTime="2014-11-07T11:45:09.590620500Z" />
    <EventRecordID>319507</EventRecordID>
    <Correlation ActivityID="{F2C3C99C-8E0F-60CD-507E-90CCC8B23C6A}" />
    <Execution ProcessID="12700" ThreadID="6472" />
    <Channel>Application</Channel>
    <Computer>WFE01</Computer>
    <Security UserID="S-1-5-17" />
  </System>
  <EventData>
    <Data Name="string0">Load control template file /_controltemplates/15/ExcelWebRenderer.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.</Data>
  </EventData>
</Event>


Log Name:      Application
Source:        Microsoft-SharePoint Products-SharePoint Foundation
Date:          11/7/2014 5:45:11 AM
Event ID:      7043
Task Category: Web Controls
Level:         Error
Keywords:      
User:          NT AUTHORITY\IUSR
Computer:      WFE01
Description:
Load control template file /_controltemplates/15/SlicerRendererControl.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-SharePoint Products-SharePoint Foundation" Guid="{6FB7E0CD-52E7-47DD-997A-241563931FC2}" />
    <EventID>7043</EventID>
    <Version>15</Version>
    <Level>2</Level>
    <Task>15</Task>
    <Opcode>0</Opcode>
    <Keywords>0x4000000000000000</Keywords>
    <TimeCreated SystemTime="2014-11-07T11:45:11.384687300Z" />
    <EventRecordID>319510</EventRecordID>
    <Correlation ActivityID="{F2C3C99C-8E0F-60CD-507E-90CCC8B23C6A}" />
    <Execution ProcessID="12700" ThreadID="6472" />
    <Channel>Application</Channel>
    <Computer>wFE01</Computer>
    <Security UserID="S-1-5-17" />
  </System>
  <EventData>
    <Data Name="string0">Load control template file /_controltemplates/15/SlicerRendererControl.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.</Data>
  </EventData>
</Event>

---

Can you browse the below URLs

http://sharepointfordummies.blogspot.in/2013/06/event-id-7362-super-user-account.html

http://social.technet.microsoft.com/wiki/contents/articles/20699.sharepoint-2010-event-id-7362-the-super-user-account-utilized-by-the-cache-is-not-configure

thanks Rahul

I do have these url.

however I am still trying to connect to what is mian cause of white screen is it  sharepoint cache/object cache ?

will this setup resolve current issue we are facing .

As per the error you are getting in the event logs it is Object cache.

Yes it will resolve it

Thanks again!

I am doing changes shortly, however I am still not sure what access /roles are to set on databases for

Object Cache Super Reader and Object Cache Super User  accounts before adding it to webapplication

this got delayed

however, we have done steps as per

http://social.technet.microsoft.com/wiki/contents/articles/20699.sharepoint-2010-event-id-7362-the-super-user-account-utilized-by-the-cache-is-not-configured.aspx

and so far Load control template file errors, Object Cache event warning ( id 7362) didn't re-appear.

Good to hear that the id 7362 no coming in event logs.

i suggest you to do  timer cache clear once.

Hi

thanks, yes we will do it once on weekend. however  I noticed another event which seems to have appeared 2-3 times before setting up object cache user as well..

The Execute method of job definition Microsoft.Office.Server.UserProfiles.LMTRepopulationJob (ID 65ab0ab8-51ed-4648-beb1-88c986c8a2ef) threw an exception. More information is included below.

Unexpected exception in FeedCacheService.IsRepopulationNeeded: Cache cluster is down, restart the cache cluster and Retry.

Hi

thanks, yes we will do it once on weekend. however  I noticed another event which seems to have appeared 2-3 times before setting up object cache user as well..

The Execute method of job definition Microsoft.Office.Server.UserProfiles.LMTRepopulationJob (ID 65ab0ab8-51ed-4648-beb1-88c986c8a2ef) threw an exception. More information is included below.

Unexpected exception in FeedCacheService.IsRepopulationNeeded: Cache cluster is down, restart the cache cluster and Retry.

Hi Dipsu,

I believe the Event iD for this error is 6398. It is related to Timer cache as i suggested you to do a Timer Cache clearance.

After doing cache clearance you can run two script to make sure this error doesn't comes.

The script is available on Below URL

http://blogs.technet.com/b/saantil/archive/2013/03/31/distributed-cache-in-sharepoint-2013-quot-unexpected-exception-in-feedcacheservice-isrepopulationneeded-cache-cluster-is-down-restart-the-cache-cluster-and-retry-quot.aspx

We ran following commands to fix the cache issue

Remove-SPDistributedCacheServiceInstance
 

$SPFarm = Get-SPFarm
$cacheClusterName = "SPDistributedCacheCluster_" + $SPFarm.Id.ToString()
$cacheClusterManager = [Microsoft.SharePoint.DistributedCaching.Utilities.SPDistributedCacheClusterInfoManager]::Local
$cacheClusterInfo = $cacheClusterManager.GetSPDistributedCacheClusterInfo($cacheClusterName);
$instanceName ="SPDistributedCacheService Name=AppFabricCachingService"
$serviceInstance = Get-SPServiceInstance | ? {($_.Service.Tostring()) -eq $instanceName -and ($_.Server.Name) -eq $env:computername}
if([System.String]::IsNullOrEmpty($cacheClusterInfo.CacheHostsInfoCollection))
{
$serviceInstance.Delete()
}

After this we ran following command

$SPFarm = Get-SPFarm
$cacheClusterName = "SPDistributedCacheCluster_" + $SPFarm.Id.ToString()
$cacheClusterManager = [Microsoft.SharePoint.DistributedCaching.Utilities.SPDistributedCacheClusterInfoManager]::Local
$cacheClusterInfo = $cacheClusterManager.GetSPDistributedCacheClusterInfo($cacheClusterName);
$instanceName ="SPDistributedCacheService Name=AppFabricCachingService"
$serviceInstance = Get-SPServiceInstance | ? {($_.Service.Tostring()) -eq $instanceName -and ($_.Server.Name) -eq $env:computername}
if([System.String]::IsNullOrEmpty($cacheClusterInfo.CacheHostsInfoCollection))
{

Add-SPDistributedCacheServiceInstance
$cacheClusterInfo.CacheHostsInfoCollection
}

We ran Get-CacheHost and it shows the service is up
Made sure service is showing as started on the server

thanks, So this is different from  what we do as clearing config cache when we stop sharepoint timer service and start it agian

--

Delete all the XML files in the config cache. The

re are loads of XML files that can be found in the folder C:\ProgramData\Microsoft\SharePoint\Config\

...

--

thanks, was checked , yes thats sufficient ,

>>Hi, check your DB logs as well ,this could be due to the sql not responding or disk is full,encountered same issue ,for me it was due to disk full on my sql s

After doing cache clearance you can run two script to make sure this error doesn't comes.

The script is available on Below URL

http://blogs.technet.com/b/saantil/archive/2013/03/31/distributed-cache-in-sharepoint-2013-quot-unexpected-exception-in-feedcacheservice-isrepopulationneeded-cache-cluster-is-down-restart-the-cache-cluster-and-retry-quot.aspx

We ran following commands to fix the cache issue

Remove-SPDistributedCacheServiceInstance
 

$SPFarm = Get-SPFarm
$cacheClusterName = "SPDistributedCacheCluster_" + $SPFarm.Id.ToString()
$cacheClusterManager = [Microsoft.SharePoint.DistributedCaching.Utilities.SPDistributedCacheClusterInfoManager]::Local
$cacheClusterInfo = $cacheClusterManager.GetSPDistributedCacheClusterInfo($cacheClusterName);
$instanceName ="SPDistributedCacheService Name=AppFabricCachingService"
$serviceInstance = Get-SPServiceInstance | ? {($_.Service.Tostring()) -eq $instanceName -and ($_.Server.Name) -eq $env:computername}
if([System.String]::IsNullOrEmpty($cacheClusterInfo.CacheHostsInfoCollection))
{
$serviceInstance.Delete()
}

After this we ran following command

$SPFarm = Get-SPFarm
$cacheClusterName = "SPDistributedCacheCluster_" + $SPFarm.Id.ToString()
$cacheClusterManager = [Microsoft.SharePoint.DistributedCaching.Utilities.SPDistributedCacheClusterInfoManager]::Local
$cacheClusterInfo = $cacheClusterManager.GetSPDistributedCacheClusterInfo($cacheClusterName);
$instanceName ="SPDistributedCacheService Name=AppFabricCachingService"
$serviceInstance = Get-SPServiceInstance | ? {($_.Service.Tostring()) -eq $instanceName -and ($_.Server.Name) -eq $env:computername}
if([System.String]::IsNullOrEmpty($cacheClusterInfo.CacheHostsInfoCollection))
{

Add-SPDistributedCacheServiceInstance
$cacheClusterInfo.CacheHostsInfoCollection
}

We ran Get-CacheHost and it shows the service is up
Made sure service is showing as started on the s

I executed following commands after  couple of minutes and it is  showing AppFabricCachingService up.

PS C:\Users\spadmin> Get-CacheHostConfig -ComputerName $env:computername -Cache
ort 22233


HostName        :WFE01.site.com
ClusterPort     : 22234
CachePort       : 22233
ArbitrationPort : 22235
ReplicationPort : 22236
Size            : 819 MB
ServiceName     : AppFabricCachingService
HighWatermark   : 99%
LowWatermark    : 90%
IsLeadHost      : True



PS C:\Users\spadmin> Get-CacheHost

HostName : CachePort         Service Name            Service Status Version
                                                                    Info
--------------------         ------------            -------------- -----------
WFE01.site.com:22233 AppFabricCachingService UP             3
                                                                    [3,3][1,3]

Hi Dipsu,

So all good now?

Are you using super user account configuration on your environm

Hi Dipsu,

So all goo

Hi Dipsu,

Did you perform Timer Cache clear on all the servers?

Can you also check that the SharePoint Timer Service is started and that its Startup Type is Automatic?

Hi

Timer cache clear was done before running scripts

http://blogs.technet.com/b/saantil/archive/2013/03/31/distributed-cache-in-sharepoint-2013-quot-unexpected-exception-in-feedcacheservice-isrepopulationneeded-cache-cluster-is-down-restart-the-cache-cluster-and-retry-quot.aspx

do we need clear cache after fixing distributed cache event 6398 again?

Yes, Timer service is set to Automatic and is in running state.

Can you restart  the distributed cache service?

http://technet.microsoft.com/en-us/library/jj21961

 I restarted appfabric service via services mmc, I Hope this will do.

After almost 5 minutes after restarting appfabric caching service , I noticed following 6398 event id in application .

The Execute method of job definition Microsoft.Office.Server.UserProfiles.LMTRepopulationJob (ID 65ab0ab8-51ed-4648-beb1-88c986c8a2ef) threw an exception. More information is included below.

Unexpected exception in FeedCacheService.BulkLMTUpdate: Region not found..

and event 5214

Insufficient SQL database permissions for user 'Name: domain\spservices SID: S-1-5-21-521425033-3276028114-1354584634-1112 ImpersonationLevel: None' in database 'SharePoint_Config' on SQL Server instance 'spsql'. Additional error information from SQL Server is included below.

The EXECUTE permission was denied on the object 'proc_putObjectTVP', database 'SharePoint_Config', schema 'dbo'.

After almost 5 minutes after restarting appfabric caching service , I noticed following 6398 event id in application .

The Execute method of job definition Microsoft.Office.Server.UserProfiles.LMTRepopulationJob (ID 65ab0ab8-51ed-4648-beb1-88c986c8a2ef) threw an exception. More information is included below.

Unexpected exception in FeedCacheService.BulkLMTUpdate: Region not found..

and event 5214

Insufficient SQL database permissions for user 'Name: domain\spservices SID: S-1-5-21-521425033-3276028114-1354584634-1112 ImpersonationLevel: None' in database 'SharePoint_Config' on SQL Server instance 'spsql'. Additional error information from SQL Server is included below.

The EXECUTE permission was denied on the object 'proc_putObjectTVP', database 'SharePoint_Config', schema 'dbo'.

From your comment we can see that "insufficient SQL DB permission".

Can you provide required permission to the user on SQL DB?

Please follow below URL to do the same

http://technet.microsoft.com/en-in/library/ee513067%28v=office.14%29.aspx

this got delayed

however, we have done steps as per

http://social.technet.microsoft.com/wiki/contents/articles/20699.sharepoint-2010-event-id-7362-the-super-user-account-utilized-by-the-cache-is-not-configured.aspx

and so far Load control template file errors, Object Cache event warning ( id 7362) didn't re-appear.

Greetings  Everyone!

Though we got rid of white screen  problem when we configured object cache user , however last week we again had similar event id 7043, web control templates rendering events and during this time visitors reported they couldn't access site.

Load control template file /_controltemplates/15/ExcelWebRendererNovControl.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.

Load control template file /_controltemplates/15/SlicerRendererControl.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.

does this mean we need to clear timer  cache still manually  regularly?

Hi Rahul,

I Searched Through forum  just in case if similar problem has some other additional steps to diagnose problem. Do you have any suggestions what  else can be checked.

Also noticed that Evenet id 7043 is being reported with  NT AUTHORITY\IUSR > not sure  what would this actually mean

User:          NT AUTHORITY\IUSR
Computer:      WFE01
Description:
Load control template file /_controltemplates/15/ExcelWebRenderer.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.

Load control template file /_controltemplates/15/ExcelWebRendererNovControl.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.

Load control template file /_controltemplates/15/SlicerRendererControl.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.

does this mean we need to clear timer  cache still manually  regularly?

Hi Dipsu,

To change this behavior:

1. Navigate to /14/TEMPLATE/ControlTemplates/TaxonomyPicker.ascx user control
2. Open the user control in a text editor and locate the first line
3. Find the character string &#44; and replace with a comma , (without quotes).
4. Save the user control

Thanks Rahul I will give it a check

Somehow, we didn't face this problem for almost 2 months so didn't touch anything.

Regards

Deepa

Hi Rahul

I Checked the recent black screen event and checked event logs and found similar events.

I believe the  fix to edit user control /14/TEMPLATE/ControlTemplates/TaxonomyPicker.ascx applies to Sharepoint 2010( https://support.microsoft.com/en-us/kb/2481844?wa=wsignin1.0)and refers to a different kind of error?

Load control template file /_controltemplates/15/ExcelWebRenderer.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.

Load control template file /_controltemplates/15/ExcelWebRendererNewWebPartControl.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.

Log Name:      Application

Source:        Microsoft-SharePoint Products-SharePoint Foundation

Date:          4/8/2015 5:31:54 AM

Event ID:      7043

Task Category: Web Controls

Level:         Error

Keywords:     

User:          NT AUTHORITY\IUSR

Computer:     WFE01

Description:

Load control template file /_controltemplates/15/ExcelWebRenderer.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.

Event Xml:

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">

  <System>

    <Provider Name="Microsoft-SharePoint Products-SharePoint Foundation" Guid="{6FB7E0CD-52E7-47DD-997A-241563931FC2}" />

    <EventID>7043</EventID>

    <Version>15</Version>

    <Level>2</Level>

    <Task>15</Task>

    <Opcode>0</Opcode>

    <Keywords>0x4000000000000000</Keywords>

    <TimeCreated SystemTime="2015-04-08T10:31:54.417407800Z" />

    <EventRecordID>426545</EventRecordID>

    <Correlation ActivityID="{2BACFA9C-9E43-60CD-507E-96A1240565F6}" />

    <Execution ProcessID="9356" ThreadID="9872" />

    <Channel>Application</Channel>

    <Computer>wfe01</Computer>

    <Security UserID="S-1-5-17" />

  </System>

  <EventData>

    <Data Name="string0">Load control template file /_controltemplates/15/ExcelWebRenderer.ascx failed: The type initializer for 'System.Net.WebUtility' threw an exception.</Data>

  </EventData>

</Event>

Hi Dipsu,

Sorry for late response.

Did you face blank screen issue again ?

Hi Dipsu,

Sorry for following up late.

Any notification you received from any user about blank screen.