Hello All and Happy Friday (the 13th buwahaha)

OK, issue

Outlook 2010 and 2013 (Exchange Accounts)

Users get emails html formatted.  Outlook displays the red x with the message "The linked image cannot be displayed.  The file may have been moved, renamed, or deleted. etc..."

However, OWA displays it properly, so do the phones.

This leads me to believe it is proxy related.  Now my problem comes in with the knowledge that we are using a Cisco IronPort as our proxy, we don't even configure the browsers for it...  Just catches it.

I've tried every fix I can find and none have resolved the issue.

Any ideas?

Thanks

Hi,

I actually found a kb about this issue:

Images in email message disply a "red x" instead of the image if the Cache value in the registry is incorrectly configured

This problem occurs if there is incorrect registry data for the Cache value under the following registry key. HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders

Important Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, back up the registry for restoration in case problems occur.

To resolve this problem, use the following steps to manually edit the data for the Cache value in the registry.

1. Exit Outlook if it is running.
2. Start Registry Editor.
   
   Windows 8
   
   On the Desktop, press the Windows key + X and click Run . Type regedit in the Open box, and then press ENTER
   
   
   Windows 7 or Windows Vista
   
   Click Start , type regedit in the Start Search box, and then press ENTER.
   If you are prompted for an administrator password or for confirmation, type the password, or click Allow
   
   
   Windows XP
   
   Click Start , click Run , type regedit , and then click OK.
3. Locate and then select the following key in the registry.
   
   HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders
4. Update the Cache value to the default value according to your version of Windows.
   
   Windows 8, Windows 7, or Windows Vista
   
   Name: Cache
   Type: REG_EXPAND_SZ
   Data: %USERPROFILE%\AppData\Local\Microsoft\Windows\Temporary Internet Files
   
   Windows XP
   
   Name: Cache
   Type: REG_EXPAND_SZ
   Data: %USERPROFILE%\Local Settings\Temporary Internet Files
5. Close Registry Editor.

Regards,

Melon Chen
TechNet Community Su

Sorry for such a late reply.  Thought I had chosen to get the alert when someone replied; however, guess I didn't.

Anyway, that is one of the things I've tried and didn't have anything wrong.

Now, I'm on Win 8.1 and my cache was set as
%USERPROFILE%\AppData\Local\Microsoft\Windows\INetCache

I did change it to Temporary Internet Files instead of INetCache and that made no difference (after a reboot).

Also this is affecting everyone, not just me.  BUT as far as we know nothing has really changed

Anyone?

This is getting extremely frustrating not being able to find a solution to this.

Again, this affects everyone - it is not isolated to a few
It affects both Windows 7 and Windows 8.1 using Outlook 2010 or Outlook 2013 (via our Exchange 2013 system).

It has to do with the way Outlook works with web filtering proxies (Cisco IronPort in our case).
I know this, because if I bypass our proxy (I have a static IP that I use to set up some of our HP Servers), then Outlook works perfectly.  Now, we do not enter in any credentials for our proxy - it just picks up the LDAP from AD (2008 R2 here).

I've tried all of the following:

Even though it's not isolated:

1. I've repaired my Outlook install
2. Created a new Outlook profile
3. Cleared the Outlook Secure Temp file cache (well it was empty anyway)
4. Tried disabling the trust center "don't download pictures automatically" option
5. Went away from cached mode
6. Removed our AV (from my system...it's Kaspersky)
7. Verified registry is pointing to the correct SecureTemp folder
8. Reset all IE settings back to default

For a more proxy targeted approach, I set the AllowImageProxyAuth DWORD in Outlook.
https://support.microsoft.com/en-us/kb/2846350

FOUND IT

Turns out that Cisco released a bug in one of their updates to their IronPort system.  This bug identifies emails with web content as webmail.  Since our company blocks webmail (gmail, yahoo, etc...) it got blocked. 

• Marked as answer by wrecked.admin 17 hours 17 minutes ago

FOUND IT

Turns out that Cisco released a bug in one of their updates to their IronPort system.  This bug identifies emails with web content as webmail.  Since our company blocks webmail (gmail, yahoo, etc...) it got blocked. 

• Marked as answer by wrecked.admin Wednesday, March 25, 2015 2:10 PM

has a fix been released by Cisco - having same issue with handful of users? I tried all of the above mentioned registry edits and none worked for me. Only remedy so far was to add them to bypass list on iron port appliance - which is obviously not ideal?