Malwarebytes Help Forums [here] may be able to help &or advise…if you can run their “logs” gathering tools.
===============================================
fwiw ~
Microsoft has released the following updated version of the Microsoft .NET Framework Repair Tool.
Latest version
Last updated: 08/01/2024
Release: v1.5
Version: 4.8.4739.15
https://support.microsoft.com/en-us/topic/microsoft-net-framework-repair-tool-is-available-942a01e3-5b8b-7abb-c166-c34a2f4b612a
- Corrupted .NET Framework: The .NET framework might be damaged or incomplete.
====================================================
.NET Framework installation guide
04/05/2025
https://learn.microsoft.com/en-us/dotnet/framework/install/