Migration from SEC to Central. Prepare remote update managers error

Question

Hi everyone, I'm migrating my clients from sophos enterprise console to sophos central. I have no problems migrating main office computers, I have problems with brench offices that have a Remote update manager. I'm following this guide which seems pretty clear to me but it doesn't work. 
 https://docs.sophos.com/central/Migrator/advancedguide/en-us/central/Migrator/AdvancedGuide/concepts/Configure_remote_SUMs.html 
 I go to the remote update manager, open an elevated CMD and go to: c: \ program files (x86) \ sophos \ MigrationAgent then I issue the command: SophosMigrationAgent.exe &ndash;p "\ sophos \ SophosUpdate \ CloudMigrationPackage" 
 (\sophos is my SEC server) 
 I also tried to copy the folder "\ sophos \ SophosUpdate \ CloudMigrationPackage" to "c:\CloudMigrationPackage" and then launched the command: SophosMigrationAgent.exe &ndash;p "c: \ CloudMigrationPackage" 
 in any case I get this error that I am attaching to you 
 what am I doing wrong?

GlennSen · Answer

Hi Luc_GLLM , 
 ON the logs I'm seeing below error. 
 2021-05-03T11:19:57.509Z [5] ERROR HttpHelper.DoOperationAndRetryIfTooManyRequests Central API call exception: Central API call failed. Status: TimedOut 2021-05-03T11:19:57.509Z [5] ERROR MigrationCoordinator.UpdateAvailableCloudFeatures Failed to update available Central features list. Endpoint migration ability may not be accurate or up-to-date. 
 Are you using the latest Migration tool on your branch office? If not? then please uninstall this Migration tool and install the latest one. Once done please perform another migration and let us know if issue still occurs.