I went to upload the PST files on a tenant to use the Office 365 Import service by uploading the PST files using the AzCopy.exe. After I was done, I started the import and after 60 minutes I get a failed error. I made some research and then restarted the import, but now I noticed a message saying “Please add Mailbox Import Export role for use running import and check back in 60 minutes
“.
To do this,
– Login in Office 365 portal
– Click on Exchange
– Click on Permissions
– Click on Admin Roles
– Add a new role with Mailbox Import Export Role
– Add the user you are using to import as part of the group
Screenshot below

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When setting up your template and publishing your apps, if you setup a Group Policy Object (GPO) for your users, this does not work. After some research and testing I found out that to solve the issue, you must do the following:
Add the Explorer application to the Published apps
Start by publishing the command line interface (cmd.exe). In the Publishingtab, select cmd, and then click Publish > Publish program using path.
Enter the name of the app and the path. For our purpose, use “File Explorer” as the name and “%SYSTEMDRIVE%\windows\explorer.exe” as the path.
In my case this worked, hope it does for you.
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Technical help and scripts for everyday issues of a sysadmin day