Hello @Chandra Manral ,
Thanks for reaching out to Microsoft QnA.
I understand that you are unable to connect to your Linux VMs using the same username and password that you used two days back.
Have you tried to reset password for the same user by navigating to "Reset password" section? Are you still not able to connect to the VM even after resetting password for an existing username, or creating a new username password?
Let me know if the above step you have already tried, then I can accordingly suggest further steps. Thanks.
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