Recover deleted devices
You can recover devices that you’ve deleted from Sophos Central if they are synced using Active Directory synchronization.
When the devices reappear in Sophos Central as a result of Active Directory synchronization, they no longer report to, or communicate with, Sophos Central. To reconnect them, do as follows:
Go to Logs & Reports > Recover Tamper Protection passwords.
The report shows devices that have been deleted in the last 90 days.
For each device, re-install the Sophos Central endpoint software.