Hi @Ajai Kolarikal ,
Thanks for contacting Microsoft Q&A platform.
You need to make sure the date and time on the device are correct and syncing automatically. If the date and time are wrong or out of sync, the code won't work. You can also try clearing your browser's cache and check if the problem persists.
If the error persists, your MFA (Multi-Factor Authentication) may need to be reset. To perform this action you must consult this link https://docs.microsoft.com/en-us/microsoft-365/...
Hope this helps you.