COM Add-in helper could not be registered

This sometimes happens when SeoTools is put in some kind of Error state by Excel.

Under Add-Ins and "Manage: Disabled Items", see if SeoTools is listed here and if so "Enable".
Example of how to manage the add-ins

If this doesn't work try this trick to reset Excel:
(only do this yourself if you know what you're doing)

Open the registry and delete these folders:


Where you replace 14.0 with your Excel version.

Then restart your computer and try to install SeoTools again.

Get help with this function in the community →