Sign in with Microsoft
Sign in or create an account.
Select a different account.
You have multiple accounts
Choose the account you want to sign in with.


After you create a folder called C:\Program, if you then go to Control Panel, double-click Add/Remove Programs, and select an installed program to remove or update, you get the following error message:

An error occurred while trying to remove "program_name"
Uninstallation has been cancelled

If you rename the folder called Program to, for example, Program2, you see the following message:

This change may impact one or more registered programs. Do you want to continue?


In the registry under


any programs whose uninstall string value starts with C:\Progra~1 or "C:\Program Files\..." will fail to be removed if a C:\Program folder exists.

These examples will fail:

UninstallString:reg_sz:c:\Program Files\My_program\setup setup

UninstallString:reg_sz:"c:\Program Files\My_program\setup" setup

UninstallString:reg_sz:c:\Progra~1\My_program\setup setup


Perform the following steps to remove the desired application:

  1. Rename the C:\Program folder.

  2. Click the Start button, point to Settings, click Control Panel, and then double-click Add/Remove Programs.

  3. Click the application you want to remove, and then click Remove.

  4. Click OK.

  5. Rename the folder in step 1 back to its original name.


Microsoft has confirmed this to be a problem in Windows NT version 4.0. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

Need more help?

Want more options?

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Was this information helpful?

What affected your experience?

Thank you for your feedback!