Policy
Prevent the computer from joining a homegroup
This policy setting specifies whether users can add computers to a homegroup. By default, users can add their computer to a homegroup on a private network. If you enable this policy setting, users cannot add computers to a homegroup. This policy setting does not affect other network sharing features. If you disable or do not configure this policy setting, users can add computers to a homegroup. However, data on a domain-joined computer is not shared with the homegroup. This policy setting is not configured by default. You must restart the computer for this policy setting to take effect.
a5db0bde5d81DisableHomeGroupRegistry
Copy registry mappings
HKLM\Software\Policies\Microsoft\Windows\HomeGroup\DisableHomeGroup (enabled) = 1
HKLM\Software\Policies\Microsoft\Windows\HomeGroup\DisableHomeGroup (disabled) = 0Policy notes
This policy setting specifies whether users can add computers to a homegroup. By default, users can add their computer to a homegroup on a private network. If you enable this policy setting, users cannot add computers to a homegroup. This policy setting does not affect other network sharing features. If you disable or do not configure this policy setting, users can add computers to a homegroup. However, data on a domain-joined computer is not shared with the homegroup. This policy setting is not configured by default. You must restart the computer for this policy setting to take effect.