1) Summary of my actions so far:
I couldn't install KB3146963 and got error code 80073712.
Web searches suggested the Microsoft "solution" (sfc followed by SURT), so I ran sfc /scannow and got 3 errors which I then web searched, and as a result I ran the Tweaking.com "pre-scan". The pre-scan revealed the issues as follows:
Scanning Windows Packages Files.
│ Started at (15/04/2016 00:42:25)
│
│ These Files Are Possibly Corrupt (Bad Digital Signature): (Total: 3)
C:\Windows\servicing\Packages\Package_2_for_KB3146963~31bf3856ad364e35~amd64~~6.1.1.0.cat
C:\Windows\servicing\Packages\Package_for_KB3146963_SP1~31bf3856ad364e35~amd64~~6.1.1.0.cat
C:\Windows\servicing\Packages\Package_for_KB3146963~31bf3856ad364e35~amd64~~6.1.1.0.cat
│
3 Combined Problems were found with the packages files, these files need to be replaced (These mainly only effect installing Windows Updates.)
│ The SFC (System File Checker) doesn't scan and replace some of these files, so you may need to replace them manually.
I then posted in the relevant Tweaking.com forum (
These Files Are Possibly Corrupt (Bad Digital Signature): (Total: 3)) Julian replied and I implemented his cat files and these "solved" the pre-scan issues. But I still couldn't install KB3146963.
Subsequently I've run SURT three or four times and run the full set of Tweaking.com Repairs a couple of times. But still, I can't install KB3146963.
I've just run SFCFix.exe and this has reported "CBS & SFC total detected corruption count: 2", but it couldn't automatically fix these faults.
2) SFCFix.exe log file
SFCFix version 3.0.0.0 by niemiro.
Start time: 2016-04-17 20:51:41.786
Microsoft Windows 7 Service Pack 1 - amd64
Not using a script file.
AutoAnalysis::
WARNING: SURT execution needed due to manifest damage on component "amd64_microsoft-windows-msxml30_31bf3856ad364e35_6.1.7601.23373_none_e6dbcfc0c6c51663". See CBS logfile for more details.
SUMMARY: Some corruptions could not be fixed automatically. Seek advice from helper or sysnative.com.
CBS & SFC total detected corruption count: 2
CBS & SFC total unimportant corruption count: 0
CBS & SFC total fixed corruption count: 0
SURT total detected corruption count: 0
SURT total unimportant corruption count: 0
SURT total fixed corruption count: 0
AutoAnalysis:: directive completed successfully.
Successfully processed all directives.
SFCFix version 3.0.0.0 by niemiro has completed.
Currently storing 0 datablocks.
Finish time: 2016-04-17 21:36:00.509
----------------------EOF-----------------------
3) Export of CBS Folder
CBS log files seem to be too large and will follow shortly via your large files uploader
Thank You
