We have been testing MDE 7.2 with Windows 7 and 10 with our HP EliteBooks. We only see this condition with the EUFI BIOS and Windows 10. Our Win 7 build uses the legacy BIOS option and we do not see the issue on these or on our Win 10 Surface Pro devices.
Basically when we boot the system to the PBA, the mouse is frozen. You can see the pointer, but it will not respond to either the touch pad or an externally connected mouse. You can still authenticate. Just type in the user ID, press enter, and type in the password. This works just fine and the system is otherwise normal.
We did open a ticket, And support had me load the default encryption policy with only the minor change to enable all drives to encrypt, and I also added a user display message in order to confirm that this is the test policy that is applied. This test had no affect on the issue.
After that I started fooling with the EUFI BIOS to try to find an option that might fix it.
Strangely, I noticed that if I "Reset All options" in the EUFI BIOS, then, the mouse would function just fine in the PBA, ONCE. On subsequent reboots the issue returns. So, it's not like the BIOS changed again after I reset it. But there must be some interaction with the features we enable in Windows 10 that use the EUFI BIOS. here they are:
HCPI Disabled (Has a known issue with MDE7.x so we keep this one disabled )
And we have TPM enabled but we don't interface this feature with the MDE policy. Also, most of the TPM versions are 1.2 which never seemed to work well with the MDE TPM option anyway. I will note that the default McAfee policy setting is set for use if available. Once again we do note that we don't have this issue with Windows 7, most likely because we are using the legacy BIOS option. We can't very well test our Win 10 Image without EUFI, since Secure Boot, and the other features I mentioned will not work without it, and the system will just not boot if we try to switch.
So, it is interesting to also note, that MDE 7.1 seems to work fine with this build. So, what changed?
Has anyone else seen anything like this?