Critical Sync Error “Failed to fetch content keys” – Now locked out

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  martagiacomelli2001 · Member · April 3, 2026 at 6:42 pm

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  Hi Day One Support, I am experiencing a persistent synchronization issue that started on March 24th, 2026.

  My desktop app has been showing a “ContentKeyFetch” error for over 10 days. The specific error message is: “Failed to fetch content keys from server” and “No active content key fingerprint found” related to a Daily Chat entry from March 24th.

  Today, the issue escalated. I logged out of the Web version and now I have been logged out of all my devices (Mobile and Web Browser). When I try to log back in via browser (even in Incognito mode), I get a generic: “An error occurred. Please try again later.” On mobile, it says: “Expired session.”

  I have a backup of my data, but I am unable to access my account at all. It seems my encryption keys are out of sync or corrupted on the server side.

  Could you please check if there is a block on my account or if my encryption metadata needs to be reset?