Something happened to our proxy server. If we set our internet connection on any machine in our network to use proxy server, then internet explorer tries to start a download as soon as it is started. Anything local is fine, but as soon as we try to access the internet, type in for instance and it opens up a download window. If we bypass the proxy server in the internet connection settings of explorer, we can connect to the internet without a problem. Any help or ideas would be appreciated. TIA.