In November 2014 I backed up my PC ( see below ) onto a 2TB ecternal drive ( Lacie). This ok and can restore. Spare space 1.2TB
Now when I attempt to Backup again, using Windows Backup and restore, with same settings I get an error message :
"The requested operation cannot be performed on a file with a user-mapped section open" This appears after some time of activity. There is no mention of WHICH file causes the problem. I have repeated with different settings ie with part backups only, or just one drive only.
The PC runs Windows 7 ( 64 bit) there is an SSD c: drive and a d: drive mostly data with some programs installed here.
I would very much appreciate some advice.