Since 1 October 2026, Microsoft has been removing one-time passcode sharing (SharePoint One-Time Passcode, or SPO OTP) from SharePoint and OneDrive. The removal ends on 31 October 2026. Every outside person who opens one of your files must now become a guest in your Microsoft Entra ID directory. Nextcloud keeps sharing simple, with a link protected by a password and an expiry date, on a server rented in your name.
External sharing becomes a directory matter
With SPO OTP, you shared a document, the recipient got a code by email and opened the file, without a Microsoft account. With Entra B2B, each partner becomes a guest of your organisation, with an invitation, two-factor authentication and access reviews.
| Date | Step |
|---|---|
| May and June 2026 | New external shares go through Entra B2B |
| 1 October 2026 | Old "specific people" links are refused without a guest account |
| 31 October 2026 | Removal complete on Microsoft 365 subscriptions |
For a local authority, an engineering firm or a non-profit constantly exchanging with outside partners, the directory fills with guests to manage, help requests rise and files are not opened in time. Users then fall back on "Anyone" links, which are less secure. And Microsoft can change this again without asking you.
Nextcloud keeps sharing simple
- A link protected by a password and an expiry date is enough for a one-off exchange, with no account for the recipient.
- A regular partner gets an account, managed in Keycloak or in your directory, with no Microsoft account.
- Rights are set folder by folder, every share can be revoked, and the logs stay on your server.
- Collabora Online lets several people edit Office documents in the browser.
- The server is rented in your name in France, and the Nextcloud code is public.
The full service, from migration to operations, is on our Nextcloud page.
Start with external sharing
You do not have to leave everything at once. Nextcloud can take over external sharing and partner spaces while Microsoft 365 keeps mail and Teams. Keycloak can be federated with Entra ID for internal accounts. The next steps, internal files and mail included, are on our Microsoft 365 migration page.
To map your external shares and start a pilot, write to us.
Sources
- Microsoft Entra B2B and SharePoint FAQ, Microsoft Learn
- Nextcloud documentation