Gary
Unavailable repair files:
winsxs\manifests\x86_microsoft-windows-w..client-ui.resources_31bf3856ad364e35_7.6.7601.19016_en-us_f21283886f011425.manifest
winsxs\manifests\x86_microsoft-windows-security-kerberos_31bf3856ad364e35_6.1.7601.22925_none_e95e032a28348f2b.manifest
What I am going to suggest has an element of difficulty but it only involves two missing manifest files so it is worth trying.
The first missing manifest is part of Update for Windows 7 for x64-based Systems (KB3083710)
https://www.microsoft.com/en-us/download/details.aspx?id=49174
The second missing manifest is part of Security Update for Windows 7 for x64-based Systems (KB3023562):
https://www.microsoft.com/en-us/download/details.aspx?id=45610
Steps to resolve this issue
a.Download the package that contains the missing files. For this example you should download the KB3083710.
b. 1.To start the download, click
https://www.microsoft.com/en-us/download/details.aspx?id=49174 and then do one of the following, or select another language from Change Language and then click Change. Click
Save to copy the download to your computer for installation at a later time. Extract the manifest from the download and copy it to the %WinDir%\Temp\CheckSUR\manifests directory.
You may need to create the directory.
c.Re-run the System Update Readiness tool.
Steps to resolve this issue
a.Download the package that contains the missing files. For this example you should download the KB3023562.
b. 1.To start the download, click
https://www.microsoft.com/en-us/download/details.aspx?id=45610 and then do one of the following, or select another language from Change Language and then click Change. Click
Save to copy the download to your computer for installation at a later time. Extract the manifest from the download and copy it to the %WinDir%\Temp\CheckSUR\manifests directory.
You may need to create the directory.
c.Re-run the System Update Readiness tool.
Good luck.