Sets the Fax service to Disabled. It exists to send/receive faxes through a fax modem or fax server — something virtually no modern PC uses. Disabling frees its footprint. Trade-off: the Windows Fax and Scan 'fax' features stop working (scanning is unaffected). Fully reversible (revert restores the original start type).
MaxTweaks applies this tweak with one click and snapshots your original setting first, so you can revert it cleanly at any time. A System Restore point is offered before batch changes, and every tweak links to its official source.
Get MaxTweaksOfficial documentation: https://learn.microsoft.com/en-us/windows/win32/fax/fax-service