How to fix OST Error 8004011d-526-80040115-0?
OST Error 8004011D-526-80040115-0 frequently occurs in older versions of Microsoft Outlook, such as 2010, 2013, and 2016, and is typically linked to synchronization or connectivity issues with Microsoft Exchange Server.
There is a Professional method to fix this error like using Sysinfo OST Recovery Tool.
Also, there are manual methods like Updating Outlook, Restart Outlook, Check connectivity, Diable Anti-Virus, and many more. You can check out here: https://www.recoveryandmanagement.com/fix-ost-error-8004011d-526-80040115-0/
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Rahul AJ commented
There are professional solutions available for resolving this error, such as using the Sysinfo OST Recovery Tool. Additionally, you can try manual methods like updating Outlook, restarting the application, checking your connectivity, and disabling antivirus software, among other troubleshooting steps.
https://www.sysinfotools.com/recovery/ost-file-recovery.php