To fix Outlook synchronization error 8004011D-526-80040115:
1.Ensure a stable internet connection.
2.Restart Outlook.
3.Verify Exchange server status.
4.Update Outlook to the latest version.
5.Recreate your Outlook profile if needed.
6.the Outlook data file (OST) using ScanPST.
7.Disable unnecessary add-ins.
8.Check for firewall or antivirus interference.
9.Contact IT support if the issue persists.
You can also get the help of Kernel for OST to PST Converter software to fix OST corruption issues:
https://www.nucleustechnologies.com/ost-to-pst-converter.html
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