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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 by Brink
14 Mar 2010
Published by

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) for all or specific users 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



Program Compatibility Assistant - Enable or Disable OPTION ONE Program Compatibility Assistant - Enable or Disable
To Enable or Disable Program Compatibility Assistant using a REG File
1. Do step 2 or 3 below for what you would like to do.

2. To Enable Program Compatibility Assistant for All Users
NOTE: This is the default setting.
A) Click/tap on the Download button below to download the file below, and go to step 4 below.
Enable_Program_Compatibility_Assistant.reg
download
3. To Disable Program Compatibility Assistant for All Users
A) Click/tap on the Download button below to download the file below, and go to step 4 below.
Disable_Program_Compatibility_Assistant.reg

download
4. Save the .reg file to your desktop.

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

6. If prompted, click/tap on Run, Yes (UAC Windows 7/8) or Continue (UAC Vista), Yes, and OK to approve the merge.

7. Restart the computer to fully apply.

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







Program Compatibility Assistant - Enable or Disable OPTION TWO Program Compatibility Assistant - Enable or Disable
To Enable or Disable Program Compatibility Assistant in Group Policy
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, double click on Turn off Program Compatibility Assistant to edit it, and go to step 4 or 5 below for what you would like to do. (see screenshot above)

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









16 Mar 2010   #1
helenp

vista
 
 

Hi,

I took your reg key and made a VB script for Win7:

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


My System SpecsSystem Spec
17 Mar 2010   #2
Woundman

Windows 7 Home Premium x64
 
 

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   #3
helenp

vista
 
 

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   #4
Brink
Microsoft MVP

64-bit Windows 10 build 10122
 
 

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   #5
janmejaya

windows 7
 
 

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   #6
Brink
Microsoft MVP

64-bit Windows 10 build 10122
 
 

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   #7
pacinitaly

windows 7 professional & ultimate 64bit laptops
 
 

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   #8
Brink
Microsoft MVP

64-bit Windows 10 build 10122
 
 

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   #9
pacinitaly

windows 7 professional & ultimate 64bit laptops
 
 

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
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