![]() ![]() ![]() Note that it shows you the PID (Process ID) of the process that has the handle to the file or directory. If a process has a handle to the file or directory, you should see results: Simply open the Resource Monitor, go to the CPU tab, and enter the file or directory path you want to check into the Search Handles box, making sure to not include quotes around the path. It can also be found in the Task Manager’s Performance tab. To open the Resource Monitor, you can simply hit the Windows Key and search for it. Windows has a built-in way to see which processes are actively using a file or directory, using the Resource Monitor. Finding which process is using the file / directory Normally you would close the file using the Dispose method when done reading / writing, but I commented that out so the file lock would remain in place. $tempFilePath = "C:\Temp\FileLock\Temp.txt" $tempFile = :: Open ( $tempFilePath, :: OpenOrCreate ) # $tempFile.Dispose() # Close file when done reading/writing To reproduce the above error, I used the following PowerShell script and then attempted to delete the file in File Explorer: ![]() The exact wording of the error message will vary depending on the application being used to update / delete the file / directory. Same thing if you try and rename or delete a directory that is in use by another process. Similarly, if you attempt to modify a file that is in use by another process, you’ll likely get an error about not being able to write to the file because it’s in use or locked by another process. If you attempt to delete the file in a different application, the wording of the error message may be different. The action can’t be completed because the file is open in If you attempt to use File Explorer to delete a file that is in use by another process, you will get an error message similar to: If you prefer videos, you can see the same content in this video. ![]() Luckily, there is an easy way to find out without the need of 3rd party tools, which is what we’ll look at in this post. Unfortunately it’s not always obvious which process is using the file. When a file or directory is in use by a process (application), you will not be able to delete or modify the file / directory. Find which Windows process has file in use ![]()
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