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RunOnce Registry Key Runs Program at Every Startup

This article was previously published under Q158022
Retired KB Content Disclaimer
This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.
SYMPTOMS
IMPORTANT: This article contains information about editing the registry.Before you edit the registry, you should first make a backup copy of theregistry files (System.dat and User.dat). Both are hidden files in theWindows folder.

When you use System Policy Editor to have a program run once by placingit in the RunOnce registry key on the default computer or a particularcomputer, the program may run every time a user logs on.
CAUSE
With system policies, every time a user logs on to a computer the policyfile is downloaded and added to the registry. Therefore, the value isalways placed in the RunOnce key at startup.
RESOLUTION
WARNING: Using Registry Editor incorrectly can cause serious problemsthat may require you to reinstall Windows 95. Microsoft cannot guaranteethat problems resulting from the incorrect use of Registry Editor can besolved. Use Registry Editor at your own risk.

NOTE: For information about how to edit the registry, view the ChangingKeys And Values online Help topic in Registry Editor (Regedit.exe). Notethat you should make a backup copy of the registry files (System.dat andUser.dat) before you edit the registry.

To cause a program to run only once, use one of the following methods:

  • Use Remote Registry to open each computer's registry file, and place the program in the RunOnce key.
  • Create an initial policy file with the RunOnce key enabled. After users have downloaded the change, edit the policy file to remove the RunOnce entry.
  • Export and send the registry entry to users in e-mail. Users can double-click the .reg file to add the key to their registry. The program runs the next time the computer is started.
MORE INFORMATION
The RunOnce key is designed to cause a value to be executed only one time.When you select the RunOnce key in System Policy Editor, the value you addis placed under the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce,HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce				
With system policies, every time a user logs on to a computer the policyfile is downloaded and added to the registry. Therefore, the value isalways placed in the RunOnce key at startup.

For information about installing Remote Administration Services, pleasesee the following article in the Microsoft Knowledge Base:
141460 How to Install Remote Administration Services
Properties

Article ID: 158022 - Last Review: 11/15/2006 15:27:47 - Revision: 1.1

  • Microsoft Windows 95
  • KB158022
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