Noticed that the sneaky Windows had turned on
Service name: OneSyncSvc_c523d
Display Name: Sync Host_c523d
service by setting it on Automatic (Delayed Start).
Tried to switch it to Disabled, but it gives a pop-up window saying:
Services
⚠ The parameter is incorrect.
OK
Description says
This service synchronizes mail, contacts, calendar and various other
user data. Mail and other applications dependent on this functionality
will not work properly when this service is not running.
So it would appear to be completely useless to me. (I'm not even logged on to Microsoft account, so the Settings > Accounts > Sync your settings tab is disabled for me – completely greyed out.)
Best Answer
The easy way to disable the OneSync service (and it's mirror) is to use the Registry.
regedit
and press Enter.Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\OneSyncSvc_c523d
. N.B. MS may change the suffix for that key, so look forOneSyncSvc_
, knowing the last few characters may differ.Start
to 4, which means "disabled". N.B. if you are not an Administrator, or if the key is owned by TrustedInstaller, you may need to change owner and permissions on the keyOneSyncSvc_c523d
and its subkeys.