Cannot run the macro 'Solver.xlam!MainEx'

Oh dear this seems like a though one to solve. Perhaps this link could be of help:

https://answers.microsoft.com/en-us/...f-bd16110396ac
or perhaps this link:
https://www.repairmsexcel.com/blog/f...n-module-excel

Alf

Tried everything described in the links with no success. Eventually I uninstalled completely Office, and reinstalled 32 bit version this time (At first it was 64bit version). It worked, no more error messages.
Thank you for your time and tips.
Hope that this thread is helpful