SAP NCO error after some upgrades from MS and update to 9.1.2

Upgraded windows with latest patches:

-KB5032198

-KB5031993

and applied IM 9.1.2 upgrade (from 9.1.1).

Now I get the error:

Could not load file or assembly 'sapnco, Version=3.1.0.42, Culture=neutral, PublicKeyToken=50436dca5c7f7d23' or one of its dependencies. The system cannot find the file specified. 

I removed and reinstalled the SAP .NET  connector version 3.0.25 but same error.

Any ideas?