windows 8 - How do I locate uncorrupted versions of corrupted files after running sfc /scannow

I had some corrupted system files. I have run sfc /scannow several times, and Dism ... RestoreHealth (followed by sfc /scannow again). This has fixed nearly everything, but I am left with the following two corrupted files:

"2015-07-21 13:14:46, Info                  CSI    0000047e [SR] Cannot repair member file [l:24{12}]"utc.app.json" of Microsoft-Windows-Unified-Telemetry-Client, Version = 6.3.9600.17842, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, hash mismatch
2015-07-21 13:14:46, Info                  CSI    00000480 [SR] Cannot repair member file [l:66{33}]"telemetry.ASM-WindowsDefault.json" of Microsoft-Windows-Unified-Telemetry-Client, Version = 6.3.9600.17842, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, hash mismatch
2015-07-21 13:14:48, Info                  CSI    00000484 [SR] This component was referenced by [l:154{77}]"Package_1_for_KB3068708~31bf3856ad364e35~amd64~~6.3.1.0.3068708-1_neutral_GDR"

They appear several times in the CBS log file for the last instance of scf /scannow. As far as I am aware, I have no AMD hardware in the system, so can I safely ignore this? If not, how can I repair the files? I note that the relevant update (KB3068708) is listed as optional, so would uninstalling it solve the problem?

I am running Windows 8.1 Pro and I have the (Windows 8) installation DVD.

Answer

Those files show as corrupted for anyone who installed the KB3068708 update -
https://support.microsoft.com/en-us/kb/3068708

This update contains the following two manifests that are occasionally
updated by the Diagnostic Tracking Service:

• telemetry.ASM-WindowsDefault.json


• utc.app.json

The two files are marked as static files in the update. When an advanced user runs the System File Checker Tool (sfc.exe), the files are unintentionally
flagged as corrupted. There is no impact or actual corruption on a
device that is running this update, and this issue will be fixed in a
later service update

Microsoft are aware of the issue and state it will be fixed at a later date.

Optionally, you can uninstall the update to resolve the issue but this isn't necessary. Having SFC show the two files as corrupt doesn't cause any issues.