User Account Control, or UAC, is a security mechanism built into Windows. Here's how to change its protection level and whether you should disable it.

Microsoft points out a side effect of the August updates. User account control prompts appear when MSI repairs are started.

Mirosoft confirms after installing KB5063878 update and changing UAC is causing MSI Repair Prompts breaking app install on Windows 10 & 11.

That said, there are a few security features that, although they address specific flaws, may themselves pose security risks.