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Microsoft Outlook New Client Excel Attachment Opening Issue

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1 unique sources, 1 articles

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Microsoft is addressing a known issue affecting the new Outlook client, preventing users from opening Excel attachments with non-ASCII characters in the file name. The bug, identified on November 23rd, triggers an error message prompting users to try opening the file again later. Microsoft has deployed a fix but it has not yet reached all affected users. The issue has been tagged as an advisory, indicating limited scope or impact. Users are advised to use Outlook on the web or download the file to open it locally.

Timeline

  1. 01.12.2025 19:42 1 articles · 23h ago

    Microsoft deploys fix for Excel attachment opening issue in new Outlook client

    Microsoft has identified and deployed a fix for a bug affecting the new Outlook client, which prevents users from opening Excel attachments with non-ASCII characters in the file name. The issue was first observed on November 23rd. The fix is still being validated and rolled out to all affected users. Users are advised to use Outlook on the web or download the file to open it locally as a workaround.

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