An error occurred during the installation of assembly

Messenger Support
1

Problem description: Trying to install WLM but to no avail.

Error code/error message: An error occurred during the installation of assembly policy.8.0"

What has been tried so far: using different versions
disabling network

Messenger version: 8.0 AND 8.5

Windows version: 8

2

Can you send a screenshot of the problem?

3

You just need to read the error message, not ask for the screenshot.

Also OP has seemingly never replied.