Microsoft 365 Error Codes

How to Fix Error 500 When Importing PST Files in Microsoft Purview

Maira Mehtab Oct 16, 2026 869 views

Question details

Users encounter an unexpected Error 500 when attempting to import PST files into Microsoft Purview Data Lifecycle Management, causing the Import tab to become completely inaccessible.

Fix Error 500 When Importing PST Files in Microsoft Purview

Product: Microsoft Purview
Device & OS: not provided
Scenario: Importing PST files into Microsoft Purview Data Lifecycle Management.
Observed behavior: The PST import process initially works but later fails with an Error 500, rendering the Import tab inaccessible across potentially multiple tenants.

Before you start

Before opening a support ticket, check the Microsoft 365 Service Health Dashboard in your admin center to see if there is an ongoing global service degradation affecting Microsoft Purview.

Solution 1Recommended

Open a Service Request in Microsoft 365 Admin Center

Since Error 500 in Microsoft Purview is a backend service issue, a global administrator must contact Microsoft Support for backend investigation and log collection.

Error 500 is typically caused by internal server errors on Microsoft's end. Tenant administrators cannot fix this locally and must escalate the issue to Microsoft's technical support team to investigate the backend logs.

Sign in to Microsoft 365 Admin Center

Navigate to the Microsoft 365 admin center (admin.microsoft.com) and log in with your global administrator credentials.

Access Help & Support

Click on the 'Support' icon in the bottom right corner of the screen or select 'Help & support' from the left-hand navigation menu.

Create a Service Request

Briefly describe the 'Error 500 PST Import Purview' issue. If the automated suggestions do not resolve your problem, select 'Contact Support' to open a ticket directly with a Microsoft engineer.

Open a Service Request in Microsoft 365 Admin Center

Required Role: You must be a Global Administrator or have the appropriate Support Administrator role assigned in your tenant to open a service request.

Solution 2

Contact Your Microsoft Cloud Solution Provider (Reseller)

If your Microsoft 365 subscription is managed by a reseller, you may not have direct access to Microsoft Support and must route the support request through your provider.

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Frequently Asked Questions

Why does Error 500 happen during PST imports in Microsoft Purview?

Error 500 is a generic HTTP status code indicating an internal server error. In Microsoft Purview, it usually means Microsoft's backend services are experiencing temporary degradation or a software bug preventing the data ingestion process from completing properly.

Can I bypass Error 500 by using a different browser or clearing cache?

No. Because this specific Error 500 is accompanied by the Import tab becoming permanently inaccessible across multiple tenants, it is a server-side issue. Standard browser troubleshooting steps like clearing cookies or changing browsers will not resolve it.

Where can I check if this is a known Microsoft 365 outage?

Global administrators can visit the 'Health' section in the Microsoft 365 admin center and select 'Service health'. Any known widespread issues affecting Microsoft Purview or Exchange Online will be listed there with updates from Microsoft engineers.

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