Lync 2013 repeatedly registers SideBySide Error Event ID 35 on 64-bit machines

Ever since the September updates were released for click-to-run Lync 2013, all of our 64-bit machines register this error multiple times throughout the day:

Activation context generation failed for "c:\program files\microsoft office 15\root\office15\lync.exe.Manifest".Error in manifest or policy file "c:\program files\microsoft office 15\root\office15\UccApi.DLL" on line 1. Component identity found in manifest does not match the identity of the component requested. Reference is UccApi,processorArchitecture="AMD64",type="win32",version="15.0.0.0". Definition is UccApi,processorArchitecture="x86",type="win32",version="15.0.0.0". Please use sxstrace.exe for detailed diagnosis.

I gather from the message that there is some problem with the 32-bit version of the app being installed on a 64-bit machine. Anyone know what exactly the problem is h

April 6th, 2015 10:25am

Hi,

It seems you are facing the same issue mentioned in the thread below:

https://social.technet.microsoft.com/Forums/office/en-US/9e18d31f-158a-446b-bfca-31cebd3e75fb/lync-crashes-with-sidebyside-error-35?forum=lyncprofile

Let's try if a repair of Office can fix this issue:

First please unregister uccapi.dll: C:\program files\microsoft office 15\root\office15\UccApi.DLL

(Note: The Unregister command must be run from command prompt with Admin privileges.)

Then go to Control Panel -> Programs and Features to repair the installation of Office(or Lync), restart the computer to check the result.

Regards,

Melon Chen

Forum Support

Free Windows Admin Tool Kit Click here and download it now
April 6th, 2015 10:50pm

Every time I try to unregister the DLL, the "Microsoft Register Server" crashes:

The command I used was:

regsvr32 /u "c:\Program Files\Microsoft Office 15\root\office15\uccapi.dll"

I ran it from both the System32 and the SysWOW64 directories, same result.

I couldn't use the "unregister" command (not recognized).

April 7th, 2015 1:20pm

Hi,

Please make sure you have run the command prompt with the Administrator Permission, would you please double confirm this?

Also, if the dll can't be registered, go ahead with the repair, check if this helps.

Regards,

Melon Chen

Forum Support

Free Windows Admin Tool Kit Click here and download it now
April 9th, 2015 1:51am

Hi,

Just checking in to see if the information was helpful. Please let us know if you would like further assistance.

Regards,

Melon Chen

Forum Support

April 13th, 2015 1:09am
I ran the repair, will wait and see if the errors continue to be logged.
Free Windows Admin Tool Kit Click here and download it now
April 14th, 2015 9:51am

Hi,

Any update?

Regards,

Melon Chen

Forum Support

April 19th, 2015 9:34pm
Still receiving same error message multiple times daily, even after doing the repair. Also installed this month's Office updates and still receiving same message.
Free Windows Admin Tool Kit Click here and download it now
April 20th, 2015 10:02am

It seems like an unresolved bug, yet I haven't seen any post of an official fix.

You can refer to this thread and read WestcoastJim's post, at least it's a fix for him.

https://social.technet.microsoft.com/Forums/office/en-US/a5ab5c80-d4f5-4e6b-8e66-bcfa76266f2d/lync-crashes-with-sidebyside-error-35?forum=w7itproappcompat

-Jeff

April 21st, 2015 9:16am

It seems like an unresolved bug, yet I haven't seen any post of an official fix.

You can refer to this thread and read WestcoastJim's post, at least it's a fix for him.

https://social.technet.microsoft.com/Forums/office/en-US/a5ab5c80-d4f5-4e6b-8e66-bcfa76266f2d/lync-crashes-with-sidebyside-error-35?forum=w7itproappcompat

-Jeff

Free Windows Admin Tool Kit Click here and download it now
April 21st, 2015 1:15pm

It seems like an unresolved bug, yet I haven't seen any post of an official fix.

You can refer to this thread and read WestcoastJim's post, at least it's a fix for him.

https://social.technet.microsoft.com/Forums/office/en-US/a5ab5c80-d4f5-4e6b-8e66-bcfa76266f2d/lync-crashes-with-sidebyside-error-35?forum=w7itproappcompat

-Jeff

April 21st, 2015 1:15pm

It seems like an unresolved bug, yet I haven't seen any post of an official fix.

You can refer to this thread and read WestcoastJim's post, at least it's a fix for him.

https://social.technet.microsoft.com/Forums/office/en-US/a5ab5c80-d4f5-4e6b-8e66-bcfa76266f2d/lync-crashes-with-sidebyside-error-35?forum=w7itproappcompat

-Jeff

Free Windows Admin Tool Kit Click here and download it now
April 21st, 2015 1:15pm

We had this problem crop up on a few Win 7 machines  recently. Skype for Business wouldn't even start. Outlook 365 would open, but opening anything would hang Outlook.

Go to Control Panel, Mail, Profiles, Delete the profile. Add the profile back in.  Log in, and Outlook works again, and Skype works too!

  • Proposed as answer by RobMagee100 14 hours 44 minutes ago
June 12th, 2015 12:47pm

We had this problem crop up on a few Win 7 machines  recently. Skype for Business wouldn't even start. Outlook 365 would open, but opening anything would hang Outlook.

Go to Control Panel, Mail, Profiles, Delete the profile. Add the profile back in.  Log in, and Outlook works again, and Skype works too!

  • Proposed as answer by RobMagee100 Friday, June 12, 2015 4:46 PM
Free Windows Admin Tool Kit Click here and download it now
June 12th, 2015 4:46pm

We had this problem crop up on a few Win 7 machines  recently. Skype for Business wouldn't even start. Outlook 365 would open, but opening anything would hang Outlook.

Go to Control Panel, Mail, Profiles, Delete the profile. Add the profile back in.  Log in, and Outlook works again, and Skype works too!

  • Proposed as answer by RobMagee100 Friday, June 12, 2015 4:46 PM
June 12th, 2015 4:46pm

We had this problem crop up on a few Win 7 machines  recently. Skype for Business wouldn't even start. Outlook 365 would open, but opening anything would hang Outlook.

Go to Control Panel, Mail, Profiles, Delete the profile. Add the profile back in.  Log in, and Outlook works again, and Skype works too!

  • Proposed as answer by RobMagee100 Friday, June 12, 2015 4:46 PM
Free Windows Admin Tool Kit Click here and download it now
June 12th, 2015 4:46pm

I fixed my issue few mins back. It was resolved by uninstalling the following security fixes

KB3054791
KB3039779

Note: I had same issue on two different instances, So the above updates are from each instance where uninstalling them resolved the issue for me.

Hope this helps !!

September 8th, 2015 7:36am

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