Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Dear Qu yanzhen,
Good day! Thank you for posting to Microsoft Community. We are happy to help you.
Based on your description, I understand that you're experiencing issues with exporting PST files using Microsoft Purview Content Search. The error message you're receiving indicates that there may be an issue with the server-side of the application.
To troubleshoot this issue:
- You said that you checked the permissions, what permissions do you have assigned to your account? As far as I know you must have eDiscovery Manager or eDiscovery administrator, go to https://compliance.microsoft.com/compliancecenterpermissions to check and if possible, remove and reassign the permissions to confirm it is not the permission issue.
- Have you checked to make sure you have Microsoft .NET Framework 4.7 installed?
- Have you tried clearing your browser cache and cookies, then try exporting the PST file again or trying different browser like internet Explorer 10, Mozilla Firefox or Google Chrome?
Refer to Export eDiscovery search results to a PST file in the Exchange admin center in Exchange Online | Microsoft Learn for more and let me how it goes for further assistance.
We look forward to hearing from you; Please understand that our initial reply may not always immediately resolve the issue. However, with your help and more detailed information, we can work together to find a solution. Thank you for your cooperation.