Windows 7 Forums


Windows 7: Program Compatibility Assistant - Enable or Disable


Program Compatibility Assistant - Enable or Disable

How to Enable or Disable Program Compatibility Assistant in Vista, Windows 7, and Windows 8
Published 14 Mar 2010
Published by

Featured Tutorial

Clean Reinstall - Factory OEM Windows 7
Clean Reinstall - Factory OEM Windows 7

How to Clean Reinstall a Factory OEM Windows 7

Peppermint3 - Create Live CD/DVD/USB To Use For Emergency Backup
Peppermint3 - Create Live CD/DVD/USB To Use For Emergency Backup

How to Perform an Emergency Data Backup When Windows 7 Will Not Boot

Make Windows 7 bootable after motherboard swap
Make Windows 7 bootable after motherboard swap

Paragon P2P Adjust OS - Make Windows 7 bootable after motherboard swap

User Profile - Customize During Installation
User Profile - Customize During Installation

How to Customize Default User Profile in Audit Mode

Clean Up Factory Bloatware
Clean Up Factory Bloatware


How to Enable or Disable Program Compatibility Assistant in Vista, Windows 7, and Windows 8

information   Information
The Program Compatibility Assistant (PCA) runs in the background and monitors user initiated programs for known compatibility issues at run time. Whenever a potential issue with an application is detected, the PCA will prompt the user with pointers to recommended solutions.

This tutorial will show you how to enable or disable Program Compatibility Assistant (PCA) in Vista, Windows 7, and Windows 8.

Turning off PCA is useful for system administrators who require faster performance and are aware of the compatibility of the applications they are using.
Note   Note
With the PCA turned off, users will not be presented with solutions to known compatibility issues when running applications.
warning   Warning
The Diagnostic Policy Service (DPS) and Program Compatibility Assistant Service must be set to Started and Automatic in Services for the PCA to be able to be enabled and to execute.

EXAMPLE: Program Compatibility Assistant Warnings
NOTE: These are some examples of the warnings that PCA may give you if it detects a compatibility issue with a program. You can read more about these here: Application Compatibility: Program Compatibility Assistant (PCA)
Program Compatibility Assistant - Enable or Disable-bb756937_ac_pca_10-en-us-msdn_10-.jpgProgram Compatibility Assistant - Enable or Disable-bb756937_ac_pca_11-en-us-msdn_10-.jpg
Program Compatibility Assistant - Enable or Disable-bb756937_ac_pca_12-en-us-msdn_10-.jpgProgram Compatibility Assistant - Enable or Disable-bb756937_ac_pca_15-en-us-msdn_10-.jpg
Program Compatibility Assistant - Enable or Disable-bb756937_ac_pca_16-en-us-msdn_10-.jpgProgram Compatibility Assistant - Enable or Disable-bb756937_ac_pca_17-en-us-msdn_10-.jpg
Program Compatibility Assistant - Enable or Disable-bb756937_ac_pca_18-en-us-msdn_10-.jpg



OPTION ONE
Using a REG File Download
1. To Enable Program Compatibility Assistant
NOTE: This is the default setting.
A) Click on the Download button below to download the file below.
Enable_Program_Compatibility_Assistant.reg
download
B) Go to step 3.
2. To Disable Program Compatibility Assistant
A) Click on the Download button below to download the file below.
Disable_Program_Compatibility_Assistant.reg

download
3. Save the .reg file to you desktop.

4. Double click/tap on the downloaded .reg file to merge it.

5. If prompted, click/tap on Run, Yes (UAC Windows 7/8) or Continue (UAC Vista), Yes, and OK.

6. Restart the computer to fully apply.

7. When done, you can delete the downloaded .reg file if you like.







OPTION TWO
Through the Local Group Policy Editor
1. Open the all users, specific users or groups, or all users except administrators Local Group Policy Editor for how you want this policy applied.

2. In the left pane, click on to expand User Configuration, Administrative Templates, Windows Components, and Application Compatibility. (see screenshot below)
Program Compatibility Assistant - Enable or Disable-gpedit.jpg
3. In the right pane, right click on Turn off Program Compatibility Assistant and click on Edit. (see screenshot above)

4. To Enable Program Compatibility Assistant
A) Select (dot) either Not Configured or Disabled. (see screenshot below step 6)
NOTE: Not Configured is the default setting.

B) Go to step 6.
5. To Disable Program Compatibility Assistant
A) Select (dot) Enabled. (see screenshot below step 6)
6. Click/tap on OK. (see screenshot below)
Program Compatibility Assistant - Enable or Disable-gpedit2.jpg
7. Close the Local Group Policy Editor window.
That's it,
Shawn






Need more help? Try searching our extensive help and support site.
Loading
16 Mar 2010  
helenp

 

Hi,

I took your reg key and made a VB script for Windows 7:

Dim WshShell
Set WshShell = WScript.CreateObject("WScript.Shell")
WshShell.RegWrite "HKCU\Software\Policies\Microsoft\Windows\AppCompat\DisablePCA",00000001,"REG_DWORD"


I also added to my script the program compat Flag, in my case Visual studio 2005:

WshShell.RegWrite "HKCU\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\{5f66dbae-cad3-468a-83d0-77ace8abc1f6}",00000004,"REG_DWORD"

as described here How to disable program fixes and Program Compatibility Assistant warnings in Windows Vista

This stopped Program Compatibility Assistant warning when installing Visual studio 2005 .

You must run the script and program as admin


Last edited by helenp; 16 Mar 2010 at 09:32 AM.. Reason: must run as admin
My System SpecsSystem Spec

17 Mar 2010  
Woundman

 

Going to assume the registry method is the alternative for people who don't have Windows 7 Professional, Ultimate, and Enterpise?
My System SpecsSystem Spec
17 Mar 2010  
helenp

 

I needed this script so that i could deploy windows 7 and Visual studio 2005 using MS system center.

I couldn't use group policy because the visual studio installer runs as part on a task sequence to install windows 7- group policy don't apply until after this has completed.

So the script could be used as part of windows 7 & software deployment.


Windows 7 enterprise
My System SpecsSystem Spec
.


17 Mar 2010  
Brink

 

Quote   Quote: Originally Posted by Woundman View Post
Going to assume the registry method is the alternative for people who don't have Windows 7 Professional, Ultimate, and Enterpise?
Hello Woundman, and welcome to Seven Forums.

Yes, that would be correct, but either option can be used in the Windows 7 Professional, Ultimate, and Enterpise editions as well.
My System SpecsSystem Spec
21 Mar 2010  
janmejaya

 

is it same as disabling "Diagnostic Policy Service"
Because i think this service is responsible for these including network problem diagnostic also.
My System SpecsSystem Spec
21 Mar 2010  
Brink

 

Hello Janmejaya,

Almost. While both will stop the Program Compatibility Assistant Warnings, disabling the "Diagnostic Policy Service" may cause unknown issues though since it is not disabled or stopped after applying any of the methods in the tutorial. I would recommend using one of the methods in the tutorial instead.
My System SpecsSystem Spec
28 Sep 2010  
pacinitaly

 

folder missing in my registry


2nd pic is after .reg file merged
Attached Thumbnails
Program Compatibility Assistant - Enable or Disable-capture.jpg   Program Compatibility Assistant - Enable or Disable-capture2.jpg  
My System SpecsSystem Spec
29 Sep 2010  
Brink

 

Hello Carmine,

Were you wanting to enable or disable this?

If enable, then that would be correct since the REG file removes the entry.

If disable, then refresh the Registry Editor window to see if that may be all that it is.
My System SpecsSystem Spec
29 Sep 2010  
pacinitaly

 

thanks Shawn,

I'm on the vista rig now

but the 1st pic was B4 merging .reg and pic2 was after ( to enable )
My System SpecsSystem Spec
Comment

 Program Compatibility Assistant - Enable or Disable problems?



Tutorial Tools



Similar help and support threads for: Program Compatibility Assistant - Enable or Disable
Windows 7 Tutorial Category
Solved My first encounter with Program Compatibility Assistant... Gaming
How can I see and change what Program Compatibility Assistant did? Performance & Maintenance
Program Compatibility Assistant General Discussion
Program Compatibility Assistant won't dissable Software
Help disabling Program Compatibility Assistant Performance & Maintenance


All times are GMT -5. The time now is 12:51 AM.



Windows 7 Forums is an independent web site and has not been authorized,
sponsored, or otherwise approved by Microsoft Corporation.
"Windows 7" and related materials are trademarks of Microsoft Corp.
© Designer Media Ltd