#1341 Unable to uninstall caldav synchronizer add-in

[franz47]

Windows 10 64 bit
Outlook 2010
Caldav Synchronizer 3.7.0.0

Logged into Windows with an admin account.
Experiencing problems I wanted to uninstall and reinstall Caldav Synchronizer and start from scratch.
I could remove the 2 sync profiles I had, after restarting Outlook they were gone. Then I went through File->Options>Add-ins>CaldavSynchronizer-->Goto->Remove gives the error message that this can only be done by an admin. But I am working on an admin account. What to do to remove CaldavSynchronizer?

I tried to upload the logfile, but the transfer crashed and the website closed the connection.