If you accidentally deleted a device from KSC, you can either wait until the next sync (15 minutes by default), or run these commands in a cmd started as administrator:
cd C:\Program Files (x86)\Kaspersky Lab\NetworkAgent
klnagchk.exe -sendhb
Or this command, if you deleted a device running linux:
If you accidentally deleted a device from KSC, you can either wait until the next sync (15 minutes by default), or run these commands in a cmd started as administrator:
Or this command, if you deleted a device running linux:
After that the device should reappear in Unassigned devices.