We have just learned that there can be incompatibility issues with Windows Vista users, when they are trying to connect to your Hotspot. The most important thing that EVERY OPERATOR MUST CHECK is the Wireless Channel which the Hotspot uses.
You must set the Wireless Channel to 11 OR BELOW, otherwise some Windows Vista users will have problems connecting to the Hotspot.
Go to Wireless > Basic Settings and change the Wireless Channel to a number between 1-11. Don't forget to test the hotspot after doing this, because there can be interferences on that channel. Try Channel 1, 6 and 11 first, these are the most compatible ones.
There can be other incompatibility issues with Vista computers, for more information please visit our troubleshooting article.