Windows .exe Invalid username/password: I'm still having problems.

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thesuperchoober

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Jul 29, 2019
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All right. So like various other people, I have had the "Invalid username/password" problem. I have tried various fixes for it, even deciding to go as far as reverting my java to 1.6. And I am still getting the error. My minecraft account is legal. When I first got the error I thought that going to mojang.com, changing my password, and trying again would fix it. No luck. I went and deleted the logindata file in the ftblauncher folder but to no avail. I tried deleting and reinstalling FTB various times and I have changed my minecraft password twice in the process.
So basically, I have been working on trying to fix this for hours and have tried every possible fix that I could find on the internet, but I am still getting this error. It is kind of annoying because I want to get on an FTB server that my friends have set up but that is not possible when I am unable to even get past the login.
I have had this error for about 2 days and have finally decided to make a forum post about it. So if anyone has any other possible fixes that I can try, can you please fill me in, or if you know a way I can bypass the error or fix it completely, please tell me.

I hope someone can help me out with this problem, its starting to get a bit frustrating.
Thanks!
 

Jerx99

New Member
Jul 29, 2019
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I just had this aswell. Account is legit and works fine on minecraft.net etc... Tried most of the things from the OP, worked fine last night... Annoying.
 

FunkyPoop

New Member
Jul 29, 2019
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I had this problem as well. What worked for me is deleting the profile and creating a new profile. I used the same information and now it works. I can also use the same savegames, so nothing got lost.
 

Nessiroj

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Jul 29, 2019
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Did you try with an other pack in the launcher to see if that makes any difference? (prob not but just to make sure)
 
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