Are you set up in company 3 with a Person record? Or are you a Global User only? I'm not sure if this makes a difference but it's worth checking. CompaniesBlock is a global block, independent of the company number.
Hello,
We also have a customer on windows who is on 2026-02-28 having the exact same error message after updating.
The title of the messagebox is in our case is: "C:\Program Files(x86)\Han...