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What is the 450 error on Windows?
Did you mean this code:
This is a common problem when you attempt to create a bunch of LiveIDs from a single IP address - which is how you appear to the system when behind a router or firewall in a corporate location. The block is done to prevent abuse, but it does present problems for situations like yours. You can create your LiveIDs from other connected locations, perhaps from home via your ISP as long as you are not looking to create dozens of them. Stephen Boots MVP
Error code: 450 : 0x800482d4 You've reached the daily limit for creating Windows Live IDs. Please wait a day and try to sign up again or contact support for assistance
Here are some error codes and their description:
System Error Codes (0-499) (Windows)