Chelsio Virtual Bus Driver (cht4vbd) Service Defaults in Windows 11
Default Settings
| Startup type: | Manual |
| Display name: | Chelsio Virtual Bus Driver |
| Service name: | cht4vbd |
| Service type: | kernel |
| Error control: | normal |
| Group: | System Bus Extender |
| Path: | %SystemRoot%\System32\drivers\cht4vx64.sys |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\cht4vbd |
Default Behavior
Chelsio Virtual Bus Driver is a kernel driver. In Windows 11 it starts only if the user, an application or another service starts it. If Chelsio Virtual Bus Driver fails to start, the failure details will be recorded into Event Log. Then Windows 11 should boot up and notify the user about the cht4vbd service startup failure.
Restore Default Startup Configuration of Chelsio Virtual Bus Driver
1. Run the Command Prompt as an administrator.
2. Copy the command below, paste it into the command window and press ENTER:
sc config cht4vbd start= demand
3. Close the command window and restart the computer.
The cht4vbd service is using the cht4vx64.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.