I can not sign into feather client it says failed veiled mojang session

Anyway, based on what you told me, give this a try:

Make sure you are signing in with the correct Microsoft or Mojang account from the Feather launcher.

Go to the "Accounts" section in the client settings and check if your account shows up there. If not, try adding it again manually.

Log out and sign back in, making sure to choose the correct account type. If you already migrated your Mojang account, choose Microsoft.

Try running the launcher as administrator, just in case there are any permission issues that prevent it from saving your session.

If none of that works, uninstall and reinstall the Feather Client, or download the latest version directly from the official website.

ok 24h passed. It log me off from 1 client (feather clinent (It was closed and when I opened it i had to login again)) but i had non stop opened lunar client with session logged. And the option sign me out did't worked. (Im not 100% sure is it what you meant) - can you pls check other replay. Thank you for the time you devoted to my case

Hi im back when i try to log in into my microsoft minecraft account on feather client it says xsts token obtaining failed what i need to do if i wanna fix this and you can add me on discord for pictures

dvd_2912#7663

Hi there 77 P.

I am Lumie and I would love to assist you today.

I am so sorry you are having issues playing Minecraft.

The error message "server_error: The contextID supplied in the request did not have a matching cookie" typically points to an issue related to authentication and session management between your Minecraft client and the authentication server. Here’s a comprehensive approach to troubleshooting and resolving the issue:

Clear Client-Specific Data
While you mentioned clearing browser cookies and history, it’s essential to clear specific data related to the Minecraft clients (Feather client and other custom clients) you are using:

Feather Client:

Navigate to the Feather Client's installation directory and find the configuration or cache folders. These are usually in a folder named something like .feather or similar.
Delete any cached data or temporary files.

Other Minecraft Clients:

Similarly, for any other Minecraft clients, locate their installation directories and clear cache and configuration data.

Check Client Authentication Settings
Ensure that the Minecraft clients are correctly configured to authenticate with your account:

Feather Client:

Go to the settings or options within the Feather client and re-enter your Minecraft credentials.
Look for any options related to session or token handling and reset or refresh them.

Update or Reinstall Clients
The issue might be due to outdated or corrupted client files:

Feather Client:

Uninstall the Feather client.
Download the latest version from the official Feather client website and reinstall it.

Adjust Firewall and Antivirus Settings
Sometimes, sensitive firewall or antivirus settings might block authentication requests:

Windows Firewall:

Go to Control Panel > System and Security > Windows Defender Firewall > Allow an app or feature through Windows Defender Firewall.
Ensure that your Minecraft clients are allowed through the firewall.

Antivirus Software:

Check your antivirus settings and make sure that the Minecraft clients are not being blocked.

Use a Different Network
Network-related issues might affect the ability to authenticate correctly:

Try connecting to a different network (e.g., a mobile hotspot) to see if the issue persists.
This can help identify if the problem is with your current network setup.

Review and Adjust Java Settings
Minecraft and its clients rely heavily on Java:

Ensure that you have the latest version of Java installed.
Go to Control Panel > Java and in the Security tab, add the Feather client and other Minecraft clients to the exception site list if necessary.

Examine Host File
Sometimes, entries in your host file might block connections to certain servers:

Navigate to C:\Windows\System32\drivers\etc\hosts.
Open the hosts file with Notepad and ensure that there are no entries blocking Minecraft or Mojang servers.

Revisit Microsoft Account Settings
Ensure that your Minecraft account is properly linked with your Microsoft account:

Go to account.microsoft.com and verify that your Minecraft account is properly linked.
Check if there are any security settings or unusual activity that might affect your login.

Advanced Troubleshooting with Logs
For a deeper look into what might be causing the issue:

Check the log files of the Minecraft clients for any error messages or unusual activity.
Logs are usually located in the installation directory under a folder named logs or similar.

I hope this helps.

I shall be here for your response. -Lumie

A lot of Minecraft gamers are having similar issues with the authorzation failing. It's probably eiher an issue at Microsofts end (usually is) or they have updated the the way the authorization works, and now the developers of the feather client need to update their software. Whatever the reason, your only option will be to wait until the issue is fixed.

You could try reporting the issue on the feather clients discord page. https://discord.com/invite/feather to see if they know anything about the issue.