Other browsers, such as Opera are known to work, but ISS does not specifically support these options. Please note that the ISS web site does support Internet Explorer version 3, including product downloads, but some advanced features may not work as desired without version 4 or newer. Some browser versions running on specific operating systems can cause display problems when visiting the ISS web site. The ISS web site experiences heavy traffic at certain times of the day, as well as after significant product releases. These surges in demand can affect system reliability, though such occurrences are rare.
Most browsers limit the number of connections to the Internet to four at any given point in time.
In other words, you can have an open browser session plus three file downloads in process at the same time. Each of these sessions splits the available bandwidth. If you have several sessions open while downloading a large ISS product file, the download may take a very long time, causing your ISP or corporate network to terminate the connection. The ISS product download centers are designed to allow visitors to queue as many files for downloading as they want, but the files will only spool out of the queue one at a time. This helps preserve bandwidth in most cases, but it doesn't prevent a visitor from having many open sessions in addition to the download.