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CBFS driver installation hang Win 8.1

Posted: 06/03/2015 05:05:15
by Paolo Manili (Basic support level)
Joined: 02/23/2015
Posts: 16

Hi everyone,

since this morning, on some of our test machines the CallbackFileSystem.Install method in c# 4.0 has started hanging.
The first machine this occurred on was a new development machine running Win8.1 Pro. The parameters passed are:
ref reboot);

There weren't any driver prompts and UAC is disabled on said machines, the call would just hang.

I tried the mapper sample with the same parameters and obtained the same result. This machine is running avast but no prompts were shown and has latest windows updates.

Eventually I succeeded in the installation by disabling Driver Signature Verification in the EFI of said machine, but this is of course unacceptable on target devices.

We are still trying on other machines to try and understand whether the issue is widespread or confined to said machines. Could you tell us if you know if we are on the right track (driver signature issues) or if there are other issues you are aware of with similar simptoms.

We are running Cbfs v.5.1.159.

Thanks in advance for any advice and help as usual,
Paolo Manili



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