GPO logon scripts allow you to run a BAT or PowerShell script at computer startup or user logon/logoff. In some cases, an administrator wants a particular script (command/program) to be run for each user or computer only once and not run at the next logons.

To solve this task, you can use a standard logon script that checks for a certain flag on the computer. This can be a registry parameter, a text file on the disk, etc.

For example, you want a certain code block to be executed only once at the first user log on to a computer.

1. Create the following BAT file (corp_user_init.bat) and save it to %SystemRoot%\SYSVOL\sysvol\<domain name>\scripts on your domain controller:@echo off
IF EXIST C:\Users\%UserName%\AppData\app_init.txt GOTO END
date /t >> C:\Users\%UserName%\AppData\app_init.txt
time /t >> C:\Users\%UserName%\AppData\app_init.txt
REM Put your code here, which will be executed once
:END
   
   The script creates a small text file in a user’s profile when it is run for the first time. When the script is run for the next time through the GPO, it checks if the file exists on a disk. If it does, the script has already been executed and the code doesn’t need to be run again.
2. Open the domain Group Policy Management console (gpmc.msc);
3. Create a new policy and link it to an OU with users (or computers, but then you have to enable the Loopback Processing mode);
4. Go to User Configuration -> Windows Settings -> Scripts (Logon / Logoff);
5. Select Logon;
6. Click Add and specify the path to your BAT file in SYSVOL (\\woshub.com\SysVol\woshub.com\scripts);
   
7. After updating Group Policy settings on a client computer, your script will be executed at user logon. Make sure that it has successfully created the app_init.txt file in a user’s profile.
   If the GPO with the script has not been applied, use the gpresult tool and troubleshooting methods described in the article Why GPO Is not Applied.
8. At the next user logs on to a computer, the main script code will not be executed. So, the script is actually applied to the user only once.

Another way to run a script only once using GPO is to create a one-time task in the Task Scheduler.

1. Save your script file (it may be either a BAT file or a PowerShell script) to the Sysvol folder on the domain controller (\\<your_domain_name>\SysVol\<your_domain_name>\scripts);
2. Create a new GPO, link it to the user’s OU, and open its settings;
3. Go to Preferences -> Control Panel Settings -> Scheduled Task -> New -> Immediate Task (At least Windows 7);
4. Specify the task name;
   
5. Open the Actions tab, click New, and specify the full UNC path to your script file in SYSVOL;
   
6. Then go to the Common tab and check the Apply once and do not reapply option;
   
7. This task will run on a computer only once at the first user logon.