OneNote cannot share a page via e-mail

Cerrato, Mauro (CARIAD) 20 Reputation points
2026-05-12T06:41:53.9133333+00:00

With microsoft® onenote® for microsoft 365 mso (version 2603 build 16.0.19822.20086) 64-bit when I want to use the feature "share e-mail copy of page" the following error message appears: "Microsoft Outlook is not properly installed or has not been started for the first time. you can install or repair outlook, or set a different default e-mail program and then try again".

I have the Office 365 suite installed by my company IT department, I already checked that the Windows 11 settings for the default e-mail program are set to Outlook Version: 1.2026.428.200

Client Version: 20260501001.10

WebView2 Version: 148.0.3967.54 (Stable)

Session ID: 9439d3da-c768-b345-925b-a0b222f6902d

What else may I try to let OneNote and outlook work together?

Thanks for the help!

Microsoft 365 and Office | OneNote | For business | Windows

Answer accepted by question author

AI answer

2026-05-12T06:42:05.1733333+00:00

The error occurs because the “New Outlook” app is set as the default mail client, and New Outlook is not MAPI‑compliant. OneNote’s “Share e‑mail copy of page” feature requires a MAPI‑compliant Outlook (Classic Outlook for Windows).

To get OneNote and Outlook working together for this feature, use Classic Outlook as the default mail client instead of New Outlook:

  1. Switch from New Outlook to Classic Outlook
    • Open the New Outlook app.
    • Use the toggle at the top right (often labeled “Try the new Outlook” / “New Outlook”) to turn New Outlook off.
    • This will start Classic Outlook for Windows.
  2. Make sure Classic Outlook is the default mail client
    • In Windows 11, go to Settings > Apps > Default apps.
    • Find Outlook (desktop) / Classic Outlook and set it as the default for MAILTO and for Email.
  3. Restart OneNote and test again
    • Close OneNote completely.
    • Reopen OneNote and try Share > E‑mail copy of page again. It should now call Classic Outlook and send the page.

If Classic Outlook is not installed in the environment, the IT department must install it; otherwise, OneNote’s email‑sharing feature cannot work because New Outlook does not support the required MAPI integration.


References:

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

Was this answer helpful?

2 people found this answer helpful.

0 additional answers

Sort by: Oldest

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.