Hi Kush Lama,
Welcome to Microsoft Q&A!
I understand how frustrating it is to finish all the setup work and then be blocked by a login error. However, before getting further, I need to note that Feather Client is a third‑party Minecraft launcher.
This is a user-to-user support forum, limited to providing technical guidance for issues on Microsoft products. If the issue originated there, Windows fixes alone won’t help. Still, I can give some suggestions for you to check out below:
- Check Feather Client official Discord or website for status on login/server outages
- Sign in to https://account.microsoft.com > if successfully, it’s not an account-issue
- In the same site, check Security > Sign-in activity for blocks or suspicious attempts
- Contact Feather Help Center > They can look into the launcher authentication.
Disclaimer: This is a non-Microsoft website. The page seems to be providing accurate, safe information. Watch out for ads on the site, and thoroughly research any product advertised before you decide to download it. Microsoft provides no assurances and/or warranties, implied or otherwise, and is not responsible for the information you receive from the third-party linked sites or any support related to technology.
I hope the information above can help somewhat with your issue. Have a good day!
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