xcracer said: I use Quicken Premier Subscription on A Windows 10 PC. I open Quicken every 2-3 days to check by account balances. I used it last Sunday and Monday, with no problems. Tuesday it would not open my data file. Quicken will start, prompt for the data file password, then just hang with a white screen and the blue circle spinning. After a minute or so I get "Program is not Responding" - Cancel or Wait. If I select wait, after several hours still nothing. I backup the data file each time I close Quicken, and then I backup those files to an external disk. I tried to restore from a backup, same error. The restore process completes with "file restored, do you wish to open the new file?" If I select the new file, the same thing happens, spinning blue circle, then the not responding error. I have backups from several months, and none of them will restore. I uninstalled Quicken and downloaded and installed a fresh copy. I then created a new data file and it opens fine. The previous data file will still not open, nor will the backup files. I then installed Quicken on a different PC, same thing, new file works fine, old files will not load. I started Quicken with the new file, and then ran the validate and super validate options against the old file and I get the same problem. The validate will start, prompt for the file password and then hang. I find it hard to believe that all of my backup files are bad. I performed a year end copy a few months ago, and then had to open the old file a few weeks later to verify a transaction, and that file now will not open with the same problem. I ran a Windows chkdsk and no errors were found. Any suggestions on what to do next?