- Is Outlook Error 0x8004010E serious?
- It's inconvenient but not serious. Error 0x8004010E means the local Outlook data file (.ost or .pst) is corrupted and can't sync. Your emails on the server are intact.
- Will I lose emails when fixing Outlook Error 0x8004010E?
- Emails stored on the server (Exchange, Outlook.com) will not be lost. The corrupted local data file may need to be deleted and re-downloaded, but the server copy is your source of truth.
- How do I fix Outlook Error 0x8004010E?
- Run the Outlook Inbox Repair Tool (scanpst.exe) — search for it in C:\Program Files\Microsoft Office. Run it on your .pst or .ost file. If corruption is severe, delete the local data file and let Outlook re-download from the server.