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Cannot send or reply emails

David Coleman 0 Reputation points
2025-10-25T14:20:20.22+00:00

Just started yesterday (10/24/25).

Hotmail will not allow me to send or respond to an email. Whenever I try to reply or send a new email I get a popup that states email was blocked.

Screenshot 2025-10-25 075625

When you click on the "More details" you get the following:

Screenshot 2025-10-25 075649

The last "sent" email was 10/23/25. I tried to send an email on 10/24 and again on 10/25, I get the same message.

Why is my Hotmail account being blocked? I can still receive emails, I just cannot send or reply!

Outlook | Web | Outlook.com | Email

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  1. Alice-N 2,225 Reputation points Microsoft External Staff Moderator
    2025-10-26T07:37:10.9833333+00:00

    Dear David Coleman , 

    Thank you for reaching out to the Microsoft Q&A Community. I understand you are unable to send or reply to emails in Outlook and see a message stating that your email was blocked. This usually happens when Microsoft detects unusual activity, your account hits sending limits, or your mailbox is full. 

    Please follow these steps to resolve the issue: 

    1. Unblock Your Outlook.com Account 

    Your account may be temporarily blocked for security reasons.  

    • Sign in and complete the unblock process: Unblock my Outlook.com account  
    • Change your password and review your security information.  
    • Enable two-step verification for added protection. 

    2. Check Storage Quota 

    If your mailbox or linked OneDrive is full, sending will be blocked.  

    • Go to Settings → Storage in Outlook.com and free up space by deleting unnecessary emails or attachments. 

    3. Verify Sending Limits 

    Outlook.com has daily sending and recipient limits. If you reached the limit, wait for 24 hours and try again.  

    4. Security Check 

    If Microsoft flagged your account for suspicious activity:  

    • Review inbox rules and forwarding settings.  
    • Remove unknown connected apps.  
    • Reset your password and enable two-step verification. 

     
    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".     

    Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.  

    Warm regards 

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