Microsoft MAC Bridge (MsBridge) Service Defaults in Windows 11
Microsoft MAC Bridge.
Default Settings
| Startup type: | Manual |
| Display name: | Microsoft MAC Bridge |
| Service name: | MsBridge |
| Service type: | kernel |
| Error control: | normal |
| Group: | NDIS |
| Path: | %SystemRoot%\System32\drivers\bridge.sys |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MsBridge |
Default Behavior
Microsoft MAC Bridge is a kernel driver. In Windows 11 it starts only if the user, an application or another service starts it. If Microsoft MAC Bridge fails to start, the failure details will be recorded into Event Log. Then Windows 11 should boot up and notify the user about the MsBridge service startup failure.
Restore Default Startup Configuration of Microsoft MAC Bridge
1. Run the Command Prompt as an administrator.
2. Copy the command below, paste it into the command window and press ENTER:
sc config MsBridge start= demand
3. Close the command window and restart the computer.
The MsBridge service is using the bridge.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.