"Justa Spot" <> wrote in message news

C251BD4-5CE5-4AAB-912C-
....
> My Windows update log gets this:
> Install failed: 80070017
That's the cyclic redundancy check again.
I still think that is it just as likely to be an erroneous symptom
of a permissions problem as an indication of an actual corrupt file.
Unless you are getting clearer clues elsewhere as to which "file"
is supposedly corrupt or inaccessible I would trace all accesses
(reads and writes) to: SoftwareDistribution;Update;CatRoot
using FileMon (freeware from SysInternals). Note that the above
string is a suggested input filter which should interleave reads
and writes to both of the main AU data repositories, including
writes to the log.
Good luck
Robert
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