Windows Update through a proxy

[Rayza]

I've connected my laptop to my company network that uses a proxy for the internet. I can browse the internet after i enter my username and password, but Windows Update doesn't work and returns Error Code 80072f78. I've googled this error code, but most people seem to be having this problem with IE6. There doesn't seem to be any mention of the fact that its the proxy that could be causing the problem. I know that all ports on the proxy are open

Any suggestions? - i'm using Vista Home Premium

[fizban2]

I've connected my laptop to my company network that uses a proxy for the internet. I can browse the internet after i enter my username and password, but Windows Update doesn't work and returns Error Code 80072f78. I've googled this error code, but most people seem to be having this problem with IE6. There doesn't seem to be any mention of the fact that its the proxy that could be causing the problem. I know that all ports on the proxy are open

Any suggestions? - i'm using Vista Home Premium

You may receive an "Error 0x80072EE2," "Error 0x80072EE7," "Error 0x80072EFD," "Error 0x80072F76," or "Error 0x80072F78" error message when you try to use the Windows Update Web site or the Microsoft Update Web site

[cluberti]

Fizban pointed you to the article, but the error you are getting is "ERROR_WINHTTP_INVALID_SERVER_RESPONSE". Since your proxy requires auth before you can access the internet, it is likely that this is where the error lies, and the proxy may need to be modified to allow access to Windows Update without auth.

[Rayza]

It seems that this problem is def a u/n p/w problem with the proxy. all the links i've followed relate to a IE6 problem and most users install an update which seems to resolve their problem. I'm obviously not using IE6 so the update wont work/not relevant.

I dont have access to our proxy so i'll have to chat to the IT dept...

Thanks anyway...