How do I resolve a cloud sync error between Quicken desktop and Quicken Cloud?

Two transactions in my check register do not sync. The error message says "illegal operation (0)". It is flagged as "Important" but there are no suggestions for how to repair the problem. I have examined the register for these entries in my Desktop Quicken and Quicken on the Web and both entries appear to match. Since I can't fix the problem, all I can do is select the "Later" button, which means I get the same message each time Quicken tries to sync.


  • Sherlock
    Sherlock SuperUser ✭✭✭✭✭
    edited February 2021
     I suggest you reset your cloud data: select Edit > Preferences...Mobile & Web, and Reset your cloud data

    If the issue persists, I suggest deleting the Quicken Cloud dataset (aka cloud account) associated with the Quicken file.  Note: You need to open another Quicken file to delete the appropriate cloud account.  You may want to review:

    The other Quicken file needs to have a distinct file identifier so that we may delete the cloud account associated with the original Quicken file.  For example, you may create a new Quicken file (select File > New Quicken File...) without any accounts and enable sync in preferences so you may view and delete the cloud account associated with the original Quicken file. 

    After deleting the cloud account, you do need to open the original Quicken file and sync for the accounts to be available on the web or through the mobile app.  The initial sync may take some time to complete.

    If the issue continues to persist, I suggest you contact Quicken Support: