Re: Windows Update using WinHTTP with authenticating proxies
I did the proxycfg -d and repeated the Microsoft Update with the same error
"Harry Johnston [MVP]" wrote:
> George wrote:
> > Used proxycfg tool with -u switch to set WinHTTP proxy settings to the
> > browser's manual proxy setting.
> > After clicking Custom link on Windows Update page an error page is received.
> > The listing of updates failed.
> > I am using an authenticating proxy and presumed authentication failed.
> My understanding is that proxycfg configures proxy settings for noninteractive
> use, so I would assume it is not able to cope with authenticating proxies.
> However, I can confirm that Windows Update is able to cope with authenticating
> proxies, I use it occasionally in this configuration. You need to configure the
> proxy for Internet Explorer in the context of the user who is performing the
> update rather than using proxycfg.
> If you use proxycfg -d to set noninteractive use to direct access, Windows
> Update should then work. Note that there will be very long delays, I presume
> this is because the Windows Update Agent is attempting to access Windows Update
> directly and timing out. However once the direct access times out it will then
> try using the proxy and ask for authentication.