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Bug
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Resolution: Works As Intended
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Normal
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None
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None
This is an account issue. We do not have the tools to help you on this tracker.
Please contact Minecraft's Customer Support, they should be able to whitelist your IP.
I work for a company that teaches Java using Minecraft. We are located at 128 colleges in the US. We've purchased a full account (Minecraft.edu denied us) for each machine.
At our large locations where 50-100 students are logging in at one time (each with separate accounts/passwords), we're noticing that after the first 30-or-so log in, the rest are getting error messages that read: "Error! Unknown e-mail address or password." If we tether to a phone or try from our office, the account/password works fine. So it's something to do with the IP address, we think.
Accounts are being denied after a certain number of logins; but the next day they'll work.
Unfortunately, we can't split computers over multiple IPs as we're on college campuses and they're stingy.