Turn off Program Compatibility Assistant (policy)
Applies the policy that turns off compatibility prompts.
Applying it needs Nexus Pro. Every plan can read it here and undo it in Restore Center. Compare plans
What it changes
HKLM\SOFTWARE\Policies\Microsoft\Windows\AppCompat\DisablePCA = 1
Before anything is written, the review screen shows this setting's current value on your PC next to the new one.
Why it helps
No 'This program might not have installed correctly' prompts.
Trade-offs
No automatic fixes for old installers.
Evidence
Moderate evidence means: helps in specific situations. Expected impact is small (1 of 3): how much it can matter when this is actually the bottleneck on your PC, not a promised gain.
Is it in a pack?
No. It isn't hand-picked as recommended, so you apply it on its own, after reading the trade-offs.
How to undo
Switch the tweak off in Nexus, or open Restore Center and restore this change (or choose Undo last change). Nexus writes back the original value it recorded before applying, not a generic default, then reads it back to confirm.
More in Apps & maintenance
- Block Store apps in the backgroundApplies the policy that stops Store (UWP) apps running in the background.CautionPerformance
- Turn off automatic maintenanceStops Windows' idle-time maintenance (scheduled optimization, diagnostics, Store app updates).CautionPerformance
- Faster shutdown (services)Waits 2 seconds instead of 5 for services to stop at shutdown.CautionPerformance
- Close hung apps at shutdown automaticallyStops the 'This app is preventing shutdown' screen.CautionPreference
- Detect frozen apps soonerMarks apps as not responding after 2 s instead of 5 s.SafePreference
- Don't wake the PC for maintenanceApplies the policy that stops automatic maintenance waking the PC.SafeReliabilityRecommended