Boot start driver not being loaded (event code 7026)

NTDEV
1

Hello. I have a problem with my driver on some systems not being loaded on boot (SERVICE_BOOT_START start type), while it can be loaded perfectly fine after the system has booted. The fact it only happens on some of my customers systems really makes me wondering.

The only error message I see in the Event Log is event code 7026 from Service Control Manager:

The following boot-start or system-start driver(s) failed to load: drivername

The driver is signed via Attestation signing @ Microsoft dev portal. It only imports functions from ntoskrnl.
Is there any way to get more info on this problem? I have searched msdn and could not find any suitable information on this event code.

Thanks

2

Have you checked its dependencies?
If it is a WDF driver, I think you should make some KMDF module loaded on boot as well.

3

@Fernando_Roberto said:
Have you checked its dependencies?
If it is a WDF driver, I think you should make some KMDF module loaded on boot as well.

Hi, thank you for your message.
It is a WMD driver, has no dependencies declared in service configuration and only imports functions from ntoskrnl.

4

Have tried to put a break point on DriverEntry routine? Just in case it is being called, but returning something different from STATUS_SUCCESS.

5

@Fernando_Roberto said:
Have tried to put a break point on DriverEntry routine? Just in case it is being called, but returning something different from STATUS_SUCCESS.

Hello. I have tried this, DriverEntry is not being called at all.