I have been using a free version of Folder Access 2.0.0 for 2 or 3 years which locks folders which can be unlocked with a password. All of a sudden I can't unlock one of the folers and I get the error message "An error occured while unlocking [path of folder]. 75 Path/File access error". I can't find who makes the software and get any help directly from them. I can still lock and unlock other folders so maybe it is a Windows problem?? I am using XP Professional.
Go to Start > Run type services.msc
Look for LckFldService and click on it. Right click on it and choose to stop the service.
Rename the locked folder. Try opening it now.
This doesn't make much sense, but it's all I found for this issue relating to Folder Access and was translated from another language.