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I don't know, need help

Thomas Thompson 0 Reputation points
2026-05-05T21:42:46.63+00:00

I need help with this problem

[Moderator note: personal info removed]


Moderator's note: Moved from Outlook | Classic Outlook for Windows | For home

Exchange Online
Exchange Online

A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.


2 answers

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  1. Teddie-D 17,970 Reputation points Microsoft External Staff Moderator
    2026-05-06T01:23:52.3433333+00:00

    Hi @Thomas Thompson 

    Since this is a public platform, we’ve moved the detailed logs to a private message to avoid exposing any personal or organizational information. Please refer to the private message for those details.   

    From the screenshot, the error InvalidLicenseException / InvalidLicenseError indicates that Outlook on the web is unable to access the mailbox due to a licensing or mailbox configuration issue.

    This is commonly caused by one of the following:

    -The account does not have an Exchange Online license assigned

    -The Exchange Online service is disabled within the assigned license

    -The license was recently changed or has not fully provisioned yet

    This will need to be checked by your organization’s IT administrator. Please ask your IT team to verify:

    -Whether your account is assigned a Microsoft 365 license that includes Exchange Online

    -Whether the Exchange Online service is enabled for your account

    In the meantime, could you confirm the following details:

    -What Microsoft 365 subscription/license is assigned to your account. You can check this at https://portal.office.com/account#subscriptions

    -Whether you’re able to access your mailbox using Outlook on the web (OWA): https://outlook.office.com.

    Once you’ve checked with your IT team, please update us with the results so we can assist you further.


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

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  2. AI answer

    2026-05-05T21:42:56.5466667+00:00

    The attached PDF cannot be analyzed here. For issues with attachments in classic Outlook for Windows, use these steps to troubleshoot:

    1. Confirm the file type is supported and not blocked by Outlook. If the file is a type Outlook considers unsafe, compress it first:
      • In File Explorer, right-click the file > Send to > Compressed (zipped) folder, then attach the .zip file instead.
    2. Check the message format if the issue is how/where the attachment appears:
      • In the open message, look at the title bar to see if it is HTML, Plain Text, or Rich Text (RTF).
      • If attachments are appearing in the message body instead of under the subject line, change the format to HTML or Plain Text (RTF shows attachments in the body).
    3. If the problem is opening the attachment (for example, PDFs or Office files):
      • Make sure the correct app is installed (e.g., Adobe Acrobat Reader for PDFs, Excel for .xlsx).
      • If an error mentions permissions or scanning, temporarily disable real-time scanning in any third‑party antivirus to test. If that resolves the issue, contact the antivirus vendor for a permanent fix.
    4. If downloading/opening attachments from Outlook on the web (OWA) in Chrome fails with generic errors:
      • In Chrome, go to Settings > Reset settings > Restore settings to their original defaults and confirm.
      • Then go to Chrome > Services > Service Settings > Restore Defaults, and test again.
    5. If none of the above helps, use Outlook’s guided support for attachment issues:
      • Open classic Outlook, select Help on the menu bar, and enter a description of the attachment problem to start guided troubleshooting.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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