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KB0043 - Outlook 2013 and 2016 may load add-in slowly
When starting Outlook 2013 or Outlook 2016, this information bar might be displayed saying “A problem was detected with an add-in and it has been disabled”:
Clicking on the “View Disabled Add-ins…” button shows a form with the list of add-in as well as how each add-in impact Outlook performance:
Sometimes even if you put the add-in into the “Always enable this add-in” list, it is still flagged as “Inactive” even with a reboot of Outlook.
It may be see that the outlook splash screen stops at loading add-ins, and Outlook is automatically closed after that. Another variant is that Outlook may keep on loading add-ins, but it Outlook never completes loading.
Outlook 2013 and Outlook 2016are less tolerant to long add-in load time compared to earlier Outlook revisions.
Option 1: Temporary solution: Click on “Always enable this add-in”
Option 2: Create a registry key to force Outlook to never disable RC Add-in:
- Open Registry Editor
- Go to this key:
+ Outlook 2013: HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook\Resiliency\DoNotDisableAddinList
+ Outlook 2016: HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Resiliency\DoNotDisableAddinList
- Create a key (right click ⇒ New ⇒ DWORD (32-bit) Value) with name based on the backend and Outlook versions:
- Right click on the created key, select [Modify] and enter “1” into Value data field:
Figure 1 - RC 3.7 and RC 3.7.10 (32-bit Outlook)
Figure 2 - RC 3.8
Figure 3 - RC 3.7 and RC 3.7.10 (64-bit Outlook)
Figure 4 - New Add-in 4.0
- Click [OK] to finish.
Option 3: Disable Certificates for publisher and server on the client PC
Open Internet Explorer, go to Settings ⇒ Internet Options, select Advanced tab, and move to Security section.
Uncheck 2 options highlighted in the screenshot:
- Check for publisher’s certificate revocation
- Check for server certificate revocation ( requires restart)
Option 4: Disable Client Certificate Revocation (CRL) check on IIS
Please refer to this article for more details.
Applies to: RC 3.7, RC 3.7.10, RC 3.8, RC 4.0
Reference: TFS #5940; 28910; 18757
Knowledge base ID: 0043
Last updated: May 09, 2016