Hi @Benjamin ,
If you toggle into the new Outlook for Windows from classic Outlook for Windows, you will be prompted to migrate settings from that app, and signatures are in the imported list.
You can try migrating your classic Outlook for Windows settings again, select Settings > Accounts > Manage next to your account and choose Get Started.
If the signature is still not visible in the New Outlook ,please provide us with the following information to narrow down the root cause of the issue:
- What type of account are you using?
- Please access the affected account in Outlook on the web and check if you can find the signature on the web. Web Link - https://outlook.office365.com/mail/
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