Server SMB Driver (srv) Service Defaults in Windows 8

Enables connectivity from Windows XP and earlier clients.

Default Settings

Startup type:
Windows 8 CoreManual
Windows 8 ProManual
Windows 8 EnterpriseManual
Windows 8.1 CoreAutomatic
Windows 8.1 ProAutomatic
Windows 8.1 EnterpriseAutomatic
Windows 8.1 Update 1 CoreAutomatic
Windows 8.1 Update 1 ProAutomatic
Windows 8.1 Update 1 EnterpriseAutomatic
Display name:Server SMB Driver
Service name:srv
Service type:filesys
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\srv

Default Behavior

The Server SMB Driver service is a file system driver. It will not be started until the user starts it in all editions of Windows 8. This service is starting automatically during the operating system startup in all editions of Windows 8.1, Windows 8.1 Update 1.

If Server SMB Driver fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the srv service hasn't been started.


Server SMB Driver can't start, if the Server SMB Driver service is disabled or not available.

All the services listed below will not start if Server SMB Driver is disabled:

Restore Default Startup Configuration of Server SMB Driver

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

1. Run the Command Prompt as an administrator.

2. Depending on the version of your operating system, copy the commands below, paste them into the command window and press ENTER.

For Windows 8 Core, Windows 8 Pro, Windows 8 Enterprise:
sc config srv start= demand

For Windows 8.1 Core, Windows 8.1 Pro, Windows 8.1 Enterprise, Windows 8.1 Update 1 Core, Windows 8.1 Update 1 Pro, Windows 8.1 Update 1 Enterprise:
sc config srv start= auto
sc start srv

3. Close the command window and restart the computer.

The srv service is using the srv.sys file that is located in the C:\Windows\System32\DRIVERS directory. If the file is removed or corrupted, read this article to restore its original version from Windows 8 installation media.