Offline Files (CscService) Service Defaults in Windows 10

The Offline Files service performs maintenance activities on the Offline Files cache, responds to user logon and logoff events, implements the internals of the public API, and dispatches interesting events to those interested in Offline Files activities and changes in cache state.

Default Settings

Startup type:
Windows 10 Home 1507N/A
Windows 10 Pro 1507Manual
Windows 10 Education 1507Manual
Windows 10 Enterprise 1507Manual
Windows 10 Home 1511N/A
Windows 10 Pro 1511Manual
Windows 10 Education 1511Manual
Windows 10 Enterprise 1511Manual
Windows 10 Home 1607N/A
Windows 10 Pro 1607Manual
Windows 10 Education 1607Manual
Windows 10 Enterprise 1607Manual
Windows 10 Home 1703N/A
Windows 10 Pro 1703Manual
Windows 10 Education 1703Manual
Windows 10 Enterprise 1703Manual
Display name:Offline Files
Service name:CscService
Service type:share
Error control:normal
Group:ProfSvc_Group
Object:LocalSystem
Path:%SystemRoot%\System32\svchost.exe -k LocalSystemNetworkRestricted
File:%SystemRoot%\System32\cscsvc.dll
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CscService
Privileges:
  • SeTcbPrivilege
  • SeImpersonatePrivilege
  • SeIncreaseBasePriorityPrivilege

Default Behavior

Offline Files is a Win32 service. In Windows 10 it is starting only if the user, an application or another service starts it. When the Offline Files service is started, it is running as LocalSystem in a shared process of svchost.exe along with other services. If Offline Files fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the CscService service has failed to start due to the error.

Dependencies

Offline Files cannot be started under any conditions, if the Remote Procedure Call (RPC) service is disabled.

Restore Default Startup Configuration for Offline Files

1. Select your Windows 10 edition and release, and then click Download.

2. Save the Win10_CscService_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The CscService service is using the cscsvc.dll file that is located in the %WinDir%\System32 folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 10 installation media.