OUTLOOK Error loading custom UI XML

Hi all,

I get this error messgae every time I start OUTLOOK or open an email message ( Error loading custom UI XML) Error Code: 0x80004005


Question Info

Last updated December 8, 2018 Views 4,574 Applies to:

Check in outlook safe mode.


Hold the Ctrl key and click on Outlook icon and open in safe mode, now check with Outlook. If you are able to work without any issues then it is due to add-ins you were not able to open. Follow the steps below and disable add-ins in Outlook 2010.

1.    Open Outlook

2.    Click on File> options> Add-ins

3.    Click on ‘GO’ beside Manage – COM Add-ins and uncheck the add-ins and click ok.

4.    Close and open Outlook and check to open add-ins


If the above step does not fix the issue, follow the link and create new profile and check.



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