Which Windows services
can you turn off safely?

Three rules before changing a service

1. Prefer Manual to Disabled. A manual service can still start when Windows needs it. A hard Disabled setting can break an update, printing or a device weeks later, after you have forgotten the cause.
2. Record every change. A change without a note becomes a future question about why the camera or printer stopped. Record the service name, old startup type and date.
3. Expect less background work, not a large FPS gain. Service tuning can reduce idle activity and memory use. It does not make the CPU or GPU faster.

Low-risk services on a typical home desktop

The condition matters. Stop these only when the feature in the description is genuinely unused:

• Fax: Windows fax support.
• DiagTrack: Connected User Experiences and Telemetry. Its disk activity is more noticeable on an HDD.
• dmwappushservice: WAP push message routing, rarely useful on a home desktop.
• RetailDemo: the retail demonstration mode used on display PCs.
• RemoteRegistry: remote Registry editing, normally unnecessary on a home machine.
• WMPNetworkSvc: shares a Windows Media Player library across the network.
• TabletInputService: touch keyboard and handwriting support, only if the PC has no touch or pen input.

Services that depend on how you use the machine

• Xbox services, including XblAuthManager, XblGameSave and XboxNetApiSvc: leave them if you use Game Pass, the Xbox app or Xbox sign-in.
• SysMain: can create sustained disk work on an HDD. On an SSD it normally behaves well and should be left alone unless measurements show a problem.
• WSearch: stopping indexing reduces background disk use but makes Start and file search slower. Narrowing indexed locations is often a better compromise.
• Spooler: stop only on a PC that never prints, including to PDF or a shared printer.
• bthserv and BTAGService: stop only when Bluetooth audio and devices are not used.

The no-touch list

PC Workman's service profiles have a hard guard containing 33 critical services. The manager will not stop them even if a profile contains a mistaken entry. The most important groups are:

• RpcSs, RpcEptMapper, DcomLaunch, LSM and core session services.
• WinDefend, MpsSvc, SecurityHealthService, BITS, CryptSvc and the event services.
• Dhcp, Dnscache, NlaSvc, Nsi and the workstation networking stack.
• Audiosrv and AudioEndpointBuilder.
• Power and Schedule.

How to test reversibly

Open services.msc, choose the service, save its current startup type, change it to Manual and stop it. Test for at least several normal work sessions. Change two or three services at a time, not twenty, so a failure has a short list of possible causes.

PC Workman 1.8.5 ships two built-in profiles matching the current code: Gaming has 18 candidate services and Economy has 21. A third Manager profile is user-composed and starts empty. The 33-entry critical guard applies to every profile, state is recorded, and changes can be restored.