Error exporting Content Search results.
1. Make sure that you're assigned the Export role. This role is assigned automatically to the eDiscovery Manager role group. If you're a member of the Organization Management role group, add yourself to the eDiscovery Manager role group on the Permissions page in the Microsoft Purview compliance portal. You can also view your permissions on the eDiscovery (Premium) overview page in the compliance portal. For more information about eDiscovery permissions, see Assign eDiscovery permissions in the Microsoft Purview compliance portal.
2. If you receive an error message when you try to download the export, verify that you're downloading the export that you created. You might have to contact the administrator who created the export to complete the download.
3. Check security filters and the storage location.
4. Subdivide the search into smaller searches by using a smaller date range or by limiting the number of locations that are searched. Then, run the search again.
Note: In Content Search and eDiscovery (Standard), the maximum exportable data for a single search is 2 TB. If your export exceeds 2 TB, reduce the amount of data to be exported, and then try again.
1. Go to the compliance portal and sign in using an account that can assign permissions.
2. In the left pane, select Permissions.
3. On the Permissions & Roles page, under Microsoft Purview solutions, select Roles.
To go directly to this page, use https://compliance.microsoft.com/compliancecenterpermissions.
4. On the Role groups for Microsoft Purview solutions page, select eDiscovery Manager.
5. On the eDiscovery Manager flyout pane, do one of the following based on the eDiscovery permissions that you want to assign.
To make a user an eDiscovery Manager:
· Next to eDiscovery Manager, select Edit.
· On the Choose eDiscovery Manager wizard page, select 
Add.
· Select the user (or users) you want to add as an eDiscovery manager, and then select Add.
· When you're finished adding users, select Done.
· On the Editing Choose eDiscovery Manager wizard page, select Save to save the changes to the eDiscovery Manager membership.
To make a user an eDiscovery Administrator:
· Next to eDiscovery Administrator, select Edit.
· On the Choose eDiscovery Administrator page, select Add.
· Select the user (or users) you want to add as an eDiscovery Administrator, and then Add.
· When you're finished adding users, select Done.
· On the Editing Choose eDiscovery Administrator wizard page, select Save to save the changes to the eDiscovery Administrator membership.
You may need to allow a few minutes for the changes to be effective and you will be ready to export your content search results!
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