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.

The Offline Files service does not exist in:

Default Settings

Startup type: Manual
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 -p
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 of Offline Files

Before you begin doing this, make sure that all the services on which Offline Files depends are configured by default and function properly. See the list of dependencies above.

1. Run the Command Prompt as an administrator.

2. Copy the command below, paste it into the command window and press ENTER:

sc config CscService start= demand

3. Close the command window and restart the computer.

The CscService service is using the cscsvc.dll file that is located in the C:\Windows\System32 directory. If the file is removed or corrupted, read this article to restore its original version from Windows 10 installation media.