Hi Joosujin,
If you see “Microsoft VBA for Outlook Addin” listed as COM Add-ins under “Active Application Add-ins”, it should appear under Manage COM Add-ins and is available to be disabled. If you could not find it under COM Add-ins, please kindly check from File > Manage COM Add-ins to see if it is listed there and can be disabled.
If not, to further check if it is related to the current Outlook profile, please kindly switch to a new Outlook profile and add your account there to see if you can find the Add-in from File > Options > Manage COM Add-ins.
If the problem persists, please kindly repair your Outlook to see if it helps. If not, to check if it is related to the Outlook version, please kindly update your Outlook to see if it works.
Hope this helps. Please feel free to let us know if there are any updates from you. If none of the above works, to further help you with your problem, please kindly provide us your Outlook version (as follows) and a screenshot of the error message popped up for further analysis. Thank you!
Best regards,
Jasmine