How do I disable Outlook Add-ins without opening Outlook? As of now, there is no option to disable Outlook add-ins without opening the Outlook client on Windows 11 or Windows 10.

Launch Outlook and log in to your email profile, if prompted. Click "File" on the Outlook ribbon bar, then click "Options" to open a new window. Click the "Add-ins" link in the list on the left ...

Thus, add-ins make emailing easier and more effective in Outlook. However, it has been reported that Outlooks keeps disabling the Add-in every 30 days or less.

Outlook will show you a list of all add-ins of the selected type. Deselect the add-ins you want to disable. For the biggest speed boost, disable all add-ins except Windows Indexing. Click "OK." ...

Then you might want to check out EnableDisable, a manager for Office add-ins. EnableDisable is a straight-forward, free utility that lets you easily turn your various add-ins on or off at startup.