I get this error code with the following message:-
"The requested operation cannot be performed on a file with a user-mapped section open"
It happens only when i am using a particular program and after I have entered data I try to close and save.
All the data that I have just entered is lost.
I have been using this program happily for years and this has only just started to occur.
The software provider suggested it could be an anti-virus or firewall issue but I haven't made any changes there
unless it has been automatically updated?
I have a Windows 7 OS - and it has been operating /responding very slowly of late.
Any suggestions where to look for the problem?