- Make a copy of your data file: Click File / Copy or Backup File. Select Create a Copy or Template. Click Next. Do not change any Copy Option settings. Save file under a new name in same folder as current Quicken data file. (The Copy process appears to be performing a record-by-record copy of the data file and not just a simple binary image copy. This has been reported as recovering some otherwise not repairable files) - If Quicken reports an error creating the Copy file and you are using Q 2019+ repeat the Copy process, but this time press and hold SHIFT and CTRL while you click File / Copy... When prompted "Ignore errors that prevent file copy?" click "Yes". (On some systems, if SHIFT+CTRL doesn't get you the prompt, try just pressing and holding SHIFT) Note: This may cause some data loss. - Open the copied file in Quicken and run both Validate and Supervalidate.- If successful so far, close and restart Quicken using the copied and validated file. You will have to reestablish download connections to all your bank accounts.