CBT driver doesn't work on my Windows server 2008 R2 x64

CBT driver doesn’t work on my Windows server 2008 R2 x64.
But your documentation declared that it was supported on Windows server 2008 R2 x64.
I have been tring many times, still not working.

Sorry, you’re having problems!

Do you have the SHA2 certificate support installed? https://support.microsoft.com/en-us/kb/3123479

What does running sc query urbackupcbt in a administrator console output?

Thanks!