Disable Program Compatibility Assistant in Windows 7 and Vista

If you are an administrator and trying to get work done rapidly, have the Program Compatibility Assistant popping up all the time can be irritating.  Now we take a look at how to disable this feature if you are tired of seeing the irritating messages.

At the same time as configuring workstations on a domain or even on your local machine, it can be quite useful to turn this annoyance off to save time.
Note that PCA monitors programs for recognized compatibility issues and can be very helpful for end users. This tip is expected at power users and administrators.
Turn Program Compatibility Assistant off on a Local Machine...

You might want to turn it off on local machine. For instance when testing software and setting up different scenarios for our articles, it saves us a lot of time having it turned off.

Tick on Start and type services.msc into the search box and hit enter.

Now scroll down to the Program Compatibility Assistant Service and click Stop.

You will get the Service Control screen briefly while it is shutdown. Then to turn it backs on just repeat the same practice.

If you are doing multiple reboots you might want to completely disable it.

Disable Program Compatibility Assistant Using Local Group Policy Editor...

Enter gpedit.msc into the start menu and hit Enter.

Now navigate to

User ConfigurationAdministrative TemplatesWindows ComponentsApplication Compatibility

Then on the left side under Setting double click on Turn off Compatibility Assistant.

Now click on Enabled then click on Apply and OK then close out of Local Group Policy Editor.

Over we do not recommend the normal home user disable PCA as it can cause conflicts and system instability. Though, for power PC users and administrators, having PCA turned off can save a lot of time and frustration.

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