Can't delete some PDF files-file opened in another program

[mibaup]

Hello,

I have a problem with deleting some PDF files (not all) - when I try to delete them, I get the following message:
"The action can't be completed because the file is open in another program".

I dont see anywhere that the file is really opened in another program. what's causing this problem, and how can I delete these PDF files?

Thanks

 

[KYHI]

Most likely you opened the pdf with reader - when you close reader it does not really close and retains the pdf files..

If you open task manager you will see that reader is still a running process - even though it is closed..

All the metro apps seem to do the same thing - you close and the process stays open.

A use Adobe reader as default..

 

[altae]

As always with locked files you can use the free program "Lock Hunter" to determine what is locking the corresponding file(s). It also unlocks the file(s) for you.

 

[whs]

The easiest is to reboot. That will release all the handles.