Central Migration tool say Unknown login error . See log for more information

Question

Hello 
 I have an Endpoint Central Server. I started migration 4 month ago. Today I can't log into the Migration Tool to see how many computers are in the old state. 
 I got this error. 
 Central Migration tool say Unknown login error . See log for more information 
 I have got log. In log: 
 2024-02-16T11:34:07.495Z [1] WARN LicenceDataDownloader.RequestFailed License data request failed! 2024-02-16T11:34:07.505Z [1] ERROR HttpHelper.DoOperationAndRetryIfTooManyRequests Central API call exception: Central API call failed. Status: UnexpectedContent 2024-02-16T11:34:07.506Z [1] WARN MigrationCoordinator.StartCentralSession Failed to start cloud session. 2024-02-16T11:34:37.217Z [5] INFO RulesDownloader.RequestSucceeded Migration rules request succeeded. 2024-02-16T11:34:37.285Z [5] INFO FeaturesDataDownloader.RequestSucceeded Cloud to SEC feature 
 
 Could you help me please?

Qoosh · Answer

Hi Mester , 
 Thanks for reaching out to the Sophos Community Forum. 
 I suspect the error in question that's preventing the migration tool from proceeding is: WARN LicenceDataDownloader.RequestFailed License data request failed! 
 This has to do with the retirement of the older updating mechanism used by the Sophos Enterprise Console and older Sophos Endpoint clients. - Updates fail due to using a retired updating mechanism 
 Going forward I'd suggest using either the powershell script (see "Creating the SophosCentralInstall.ps1") or .bat file mentioned in the following article to deploy to the devices on your environment. - https://support.sophos.com/support/s/article/KB-000035049?language=en_US 
 If you wish to verify which devices are protected and which are un-protected, you can use Sophos ADSync . Devices displayed in the "Unmanaged" state indicate that protection is not deployed to the device. See "What are unprotected or unmanaged devices?". - Device group discovery FAQ