Hello @Biplob Hossein,
Thank you for reaching out to the Microsoft Q&A Forum.
Based on the information you shared, it appears that you are currently experiencing an issue related to Multi‑Factor Authentication (MFA) when attempting to sign in to your account. To help us better understand the situation and provide appropriate guidance, I would appreciate your assistance with a few additional details.
Could you please let me know which MFA method you are using when the error occurs? For example, are you using phone call verification, SMS text message, or the Microsoft Authenticator application?
Additionally, please confirm whether your account is a personal Microsoft account (outlook.com, hotmail.com, etc.) or a business/school account managed by your organization. The troubleshooting steps can differ significantly depending on the account type. If possible, please also provide a screenshot of the error message you are receiving. Before sharing, kindly make sure that all personal or sensitive information is properly hidden or blurred for your privacy.
To rule out browser‑related issues, please try signing in again using an Incognito window in Google Chrome or an InPrivate window in Microsoft Edge. Sometimes cached credentials, cookies, or extensions can interfere with the MFA prompt, and using a private browsing session can help determine whether this is the cause.
If your account is a business or organization‑managed account, I strongly recommend contacting your IT Administrator. They have the ability to review your MFA settings in the Microsoft Entra Admin Center, revoke your existing MFA session, and require you to re-register your authentication methods. This process often resolves MFA‑related problems caused by outdated authentication configurations or synchronization issues.
Related documentation: Manage authentication methods for Microsoft Entra multifactor authentication
Please update us as soon as you have the requested details or after you have tried the recommended steps. We will be happy to continue assisting you and work with you toward a resolution.