Thank you for posting your question on Microsoft Q&A Community. We're happy to help you with your concern.
To help troubleshoot the spacing issue you're seeing in Outlook 365 on Windows 11, could you please clarify a few things:
- Which part of the email appears double-spaced? Is it only the signature, or does it affect the body of your emails too?
- Are you composing emails in plain text, HTML, or rich text format? You can check this under Format Text in the ribbon.
- Did you copy your signature from another source (e.g., Word, a website, or an old email)? Sometimes formatting carries over and causes spacing issues.
- Have you tried editing the signature directly in Outlook’s signature editor? If so, does the spacing still appear off?
- Does the issue occur in all emails or only when replying/forwarding?
- Are you using any accessibility or display settings in Windows 11 that might affect text rendering?
Once we have a bit more detail, we’ll be better equipped to guide you toward a fix.
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