https://community.intel.com/t5/Software-Tuning-Performance/msr-sys-signed-by-Microsoft/m-p/1745203#M8656 <P>Hi,</P><P>I'm using the <A href="https://github.com/intel/pcm" target="_blank">https://github.com/intel/pcm</A> API to retrieve MSR (power) counters on an x86 architecture running Windows.<BR />The problem is that the MSR.sys file generated or downloaded from <A href="https://ci.appveyor.com/project/opcm/pcm/build/artifacts" target="_blank">https://ci.appveyor.com/project/opcm/pcm/build/artifacts</A> is not signed by Microsoft.<BR />On recent versions of Windows, the suggested solution of signing the driver locally fails. Is there a way to obtain an official driver signed by Microsoft?</P><P>Thanks in advance,</P> Tue, 21 Apr 2026 13:27:36 GMT HerveMat 2026-04-21T13:27:36Z https://community.intel.com/t5/Software-Tuning-Performance/msr-sys-signed-by-Microsoft/m-p/1745203#M8656 <P>Hi,</P><P>I'm using the <A href="https://github.com/intel/pcm" target="_blank">https://github.com/intel/pcm</A> API to retrieve MSR (power) counters on an x86 architecture running Windows.<BR />The problem is that the MSR.sys file generated or downloaded from <A href="https://ci.appveyor.com/project/opcm/pcm/build/artifacts" target="_blank">https://ci.appveyor.com/project/opcm/pcm/build/artifacts</A> is not signed by Microsoft.<BR />On recent versions of Windows, the suggested solution of signing the driver locally fails. Is there a way to obtain an official driver signed by Microsoft?</P><P>Thanks in advance,</P> Tue, 21 Apr 2026 13:27:36 GMT https://community.intel.com/t5/Software-Tuning-Performance/msr-sys-signed-by-Microsoft/m-p/1745203#M8656 HerveMat 2026-04-21T13:27:36Z