Sets PcaSvc (Program Compatibility Assistant Service) to Disabled. PcaSvc watches program launches to detect legacy apps that need compatibility shims and to pop the 'this program may not have installed correctly' dialog. On a maintained system this rarely fires and the service is a constant background presence. Trade-off: no automatic compatibility prompts. Reversible.
MaxTweaks applies this tweak with one click and snapshots your original setting first, so you can revert it cleanly at any time. A System Restore point is offered before batch changes, and every tweak links to its official source.
Get MaxTweaksOfficial documentation: https://learn.microsoft.com/en-us/windows/win32/devnotes/program-compatibility-assistant