If your anti-spyware program blocks BHO (Browser Helper Objects), that may be
the cause of this update failing to install. As I wrote elsewhere:
For several days in a row, Automatic Updates would tell me I had an update
ready to be downloaded & installed: KB918419. Each time, it *seemed* to
download & install, but the next day, I was alerted to a new update--the same
update.
I tried to update directly from the MSUpdate site, and it failed each time.
I downloaded the update, then ran the .exe, and it failed.
I tried "Detect and Repair," and it eventually told me: "Error 1406. Setup
cannot write the value Button Text to the registry key
\SOFTWARE\Microsoft\Internet
Explorer\Extensions\{92780B25-18CC-41C8-B9BE-3C9C571A8263}."
That message made me check my Webroot Spy Sweeper logs... and that was it.
Repeated blockage of BHO 92780B25-....
I logged onto the admin console for Webroot Spy Sweeper Enterprise, and
added {92780B25-18CC-41C8-B9BE-3C9C571A8263} to the BHO whitelist. After
polling my PC, I went to MS Updates, and KB918419 installed successfully.
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