With the recent Windows 10 Anniversary Update the F keys used for many important keyboard functions have been broken. Our teams have logged the issue with Microsoft for a resolution. Product Support will advise once the solution is provided.
A possible workaround: Set the system variable TEMPOVERRIDES to 0.
There are other non Autodesk issues being published with the Windows 10 Anniversary update.
Windows 10 update is breaking millions of webcams - how to fix it