What error message do you get?  Do you get 404 errors? or another error?

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-Mitchel Sellers
Microsoft MVP, ASPInsider, DNN MVP
CEO/Director of Development - IowaComputerGurus Inc.


Visit mitchelsellers.com for my mostly DNN Blog and support forum.

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Let me first say that I do not have experience with Vista first hand, but with that said, I want to ask you, have you confirmed with a virus scanning tool for Vista that the machine is indeed infected?  If you have, then you have to clean it up first, with virus tools specifically for Vista, since the whole architecture that virus tools use to hook up to the O/S changed.  If you have not confirmed with 100% of certainty that you do have a virus, I would recommend you to run virus scanning before continuing the DNN troubleshooting.  If you confirm that you do not have a virus, then we can take another approach, with all the new stuff in Vista I wouldn't be surprised if your machine is clean and it is just an overzealous security setting.

In any case, check your Hosts file.  One trick some viruses and trojans use is to modify this file to redirect common helpful Web sites like Windowsupdate, virus manufacturers, etc. to prevent you from cleaning up the machine.  This is unlikely in Vista, even without virus protection, but is worth the try.  The Hosts file is a text file with no extension located in "C:\Windows\System32\drivers\etc\".  The default Hosts file has basically only one active line that looks like "127.0.0.1 localhost".  Any other entries for commercial web sites would be suspicions and would need to be deleted.  See this link for info on editing the Hosts file in Vista: http://support.microsoft.com/kb/923947.

Carlos