Windows driver foundation constantly using cpu

Just installed build 9926 of the  windows 10 TP on my Yoga 2 Pro laptop.  Now, the Windows Driver Foundation service is constantly using about 30% CPU.  This was not happening with the previous build.  I have left the computer running for a couple hours to see if there were any cleanup processes running, but the service is still hogging CPU.


I played around with the computer for some time and seem to have solved the problem.  I noticed that my WIFI completely died each time after bringing the laptop out of sleep and the keyboard stopped responding.  Re-installing the WIFI driver and uninstalling the Lenovo Transitions software (figured it might be competing with Continuum),  fixed those problems. The UMDF using 30% cpu may not be excessive, but it would a considerable drain on the battery.  After the above changes and a couple reboots, the UMDF stopped running constantly.  Not sure which change was directly responsible for shutting down the UMDF, but now things seem to be running properly. 


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Last updated April 29, 2021 Views 54,529 Applies to: