If you have a remote service connection point and you installed Configuration Manager current branch, version 2002 early update ring before March 30, 2020, you'll see a timeout error resembling the following in the admin center.
Getting results timed out. Make sure the Configuration Manager service connection point is operational and has a connection to the cloud.
Copy the Microsoft.ConfigurationManagement.ManagementProvider.dll file from the site server's bin\x64 folder to the remote service connection point's bin\x64 folder.
Restart the SMS_EXECUTIVE service on the service connection point server.
Tenant attach: ConfigMgr client details in the admin center (preview)
Troubleshoot ConfigMgr client details in the admin center (preview)