This works great!  It prevents both read and write access.

Note that on Windows 10, it must be run As Administrator.

Thanks!!

That's such a smart utility - and just like everyone else here I've used it to track down some file locking errors in my app.

Good one!

Thanks!

Just what I needed, thanks Jens

Thanks a lot, it work well!

Very helpful. I wanted to test Robocopy's /r and /w switches and your program (using the start command to run it in another process) helped me accomplish my goal.

Thanks for the tool, I was needing to test locked file handling as well.  Works great...so does my error handling now :)

David

Hi,

I would like to use this tool in a batchscript for that:

1. set a exclusive lock on file test.log

2. copy test.log with FastCopy to another path

3. unlock the file test.log 

Is it possible to do this with your tool or is it possible to change the tool.

Thanks for your help

Gunther

During development, the need arose to test a case when a local file is locked by another program.

Thanks a lot for this small tool, it simplified my work a lot!