This error message indicates that the GitLab Runner was unable to start a process because it could not find the PowerShell executable file in the system’s PATH environment variable.
To resolve this issue, you need to add the path of the PowerShell executable file to the system’s PATH environment variable. You can do this by following these steps:
Open the Control Panel and click on System.
Click on Advanced system settings, then click on Environment Variables.
Under System Variables, scroll down and find the Path variable, then click on Edit.
Add the path to the PowerShell executable file (usually located in C:\Windows\System32\WindowsPowerShell\v1.0).
Click OK to close all windows and save changes.
After adding the path to the PowerShell executable file, try running the GitLab Runner job again to see if the issue has been resolved.