MSQUIC (MsQuicPrev) Service Defaults in Windows 11

This service implements the QUIC transport protocol.

The MSQUIC service exists only in:

Default Settings

Startup type: Manual
Display name:MSQUIC
Service name:MsQuicPrev
Service type:kernel
Error control:normal
Group:Network
Path:%SystemRoot%\system32\drivers\msquicprev.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MsQuicPrev

Default Behavior

MSQUIC is a kernel driver. In Windows 11 it starts only if the user, an application or another service starts it. If MSQUIC fails to start, the failure details will be recorded into Event Log. Then Windows 11 should boot up and notify the user about the MsQuicPrev service startup failure.

Restore Default Startup Configuration of MSQUIC

1. Run the Command Prompt as an administrator.

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

sc config MsQuicPrev start= demand

3. Close the command window and restart the computer.

The MsQuicPrev service is using the msquicprev.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 11 installation media.