My last name was updated on my work email. Now i cannot log into my laptop.

Hi @Anamaria Solis, 

Good day to you! Welcome to Microsoft Q&A forum. 

Thank you for reaching out. I’m sorry to hear that you're currently unable to sign in to your computer following the recent update to your work email address. I understand how disruptive this can be, and I’m here to help. 

To assist you further, could you please provide the following information: 

1. Is this a personal account (e.g., @hotmail.com, @outlook.com) or a business/work account (e.g., through Microsoft 365 or your organization's domain)? The interface differs between these two types of accounts, so knowing this information will help me support you more effectively.  
2. If it's a business/work account, are you IT administrator of your organization/ school or an end-user?   
3. What type of Microsoft license are you currently using (e.g., Microsoft 365 Personal, Business Standard, E3, etc.)? 
4. The exact error message you receive when attempting to sign in (A screenshot of the issue, if possible - this will help us diagnose the problem more accurately) 
5. Whether you’re able to access your account via web browser (e.g., signing in at https://portal.office.com) 

Once we have this information, we’ll be better positioned to guide you through the next steps. Please feel free to add any additional information you deem as necessary. 

In the meantime, here are a few steps you can try as a workaround: 

1. Try logging in with your old email address (if still cached on the device) using your usual password. 
2. Use your new email address but try both: 
   • Your current password 
   • Your previous password (in case the sync hasn’t completed) 
3. Log in with your username instead of your email address, if known (e.g., DOMAIN\username). 
4. Connect to the internet using a wired connection or known Wi-Fi to ensure your device can reach the domain controller or Azure AD. 
5. Restart your device and try again, sometimes a reboot can reinitialize cached credentials. 
6. If you're using a Windows Hello PIN, try switching to password login by selecting “Sign-in options” on the login screen. 

I hope this information is helpful. Please follow these steps and let me know if it works for you. If not, we can work together to resolve this.  

Thank you for your patience and your understanding. If you have any questions, please feel free to reach out.  

I'm looking forward for your reply.  

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