I've recently downloaded and installed Syncbackfree as my Windows task scheduler will no longer run my weekly backup of my hard drive onto an external drive (I see a multitude of about 20 error windows saying that the task object version is either unsupported or invalid). The error occurred, I believe, when I upgraded to Windows 10 but went back to Windows 7 after only one week as I was finding it then too difficult to run. As it turned out I had a hardware problem (router) and our connection has since been changed to glass fibre optics instead of COAX cable. It was only then I discovered I my PC hadn't run its automatic backup for about 2 months! Syncbackfree was suggested by the person I use when I can't solve my own problems via Google or many of the computer forums. So far so good except I have been a bit lazy and just scheduled a straight forward weekly backup of all my data files which I keep on a separate drive to my programs (they are stored on C whilst my data is stored on I). I then went back to my source files and began a spring clean of double files and data (I had restored my last external backup via Windows thinking this would somehow mend my task scheduler but all it did was duplicate all my jpg's and music). To my horror I found that everything I had deleted had been returned from the destination folder (my external hard drive). So I had to go through the process once more and delete all the newly duplicated files or move others to different or new folders. Then I deleted my instructions in Syncbackfree and made a new backup of my data files. Again - so far so good....... except that I have since made the discovery that a deleted file in the source drive will not be deleted in the destination file. I have at present only used the regular backup button having quickly realised that the synchronize button will not do the job I want done. It only added new data stored but didn't overwrite folders in which changes were made between backups. The only button I have not yet tried out is 'mirror' as I can find little information about what it actually does. I suppose what I'm really asking is this....... which button in Syncbackfree will help me keep my backed up data EXACTLY the same on an external hard drive as the data stored in my PC? I seriously don't want to have to remember which files I deleted in my PC so I can repeat the process by hand in my external drive. And one other small question...... I read somewhere that some only used Syncbackfree for storing data which is irreplaceable. I was taught to back up EVERYTHING I had stored on my PC except perhaps programs and drivers which could be downloaded or re-installed from disc in the event of a crash. I've only ever experienced 2 crashes since I first sat behind a screen back in 1988 but both times lost all my emails. These are backed up manually every couple of days on a pst file in my data drive on my PC! And I would be eternally grateful if anyone can give me a clue as to how I can repair my Windows task scheduler without having to spend days formatting my PC and re-installing Windows 7 and then another day upgrading it to Windows 10. I have found various forums relating to this subject but its way above my head and pay-grade and I seriously can't follow the coding or keys. Thanks for spending the time to read this... hopefully there is someone willing and able to help me gain understanding about Syncbackfree and perhaps more important how I can get my Windows task scheduler to work again.