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What’s New in Microsoft 365 – March 2026 Updates You Actually Need to Know

Big Microsoft 365 Changes Are Landing – Here’s What Matters for UK Businesses

Microsoft rolls out updates all the time, but let’s be honest most business owners don’t have time to read 20‑page roadmaps or guess what affects their day‑to‑day work.

So, the IT Support London team at Speedster IT have done the hard work for you.

Below are the key Microsoft 365 updates coming from March–May 2026, explained in plain English, and more importantly, what they mean for your business.

Microsoft Teams: Smarter Meetings, Better Control

AI video meeting recaps (requires Copilot)

Miss a meeting? No problem.

Microsoft Teams will now create AI‑generated video recaps, pulling together:

  • Key talking points
  • Short video clips
  • A narrated summary of what actually mattered

✅ Great for managers
✅ Great for busy teams
✅ No more “can you catch me up?” emails

📅 Rolling out late April early May 2026

Spot External Bots Joining Your Teams Meetings

Ever worried about recording bots or AI assistants silently joining a Teams call?

Microsoft will now detect external meeting assistant bots as they try to join meetings, giving organisers visibility and control.

✅ Better meeting security
✅ More transparency
✅ Safer internal discussions

📅 Early June 2026

Multiple Phone Numbers in One Teams Account

For teams handling:

  • Sales lines
  • Support numbers
  • Regional numbers

Users can now manage up to 10 phone numbers inside one Teams account, without switching devices or logins.

✅ Ideal for growing businesses
✅ Cleaner call handling
✅ No extra hardware needed

📅 Late April–mid‑May 2026

Teams Mobile: Catch‑Up Made Easy

A new Catch Up view on Teams mobile brings:

  • Missed chats
  • Unread meeting messages
  • Followed threads

All in one screen, instead of jumping between chats.

✅ Less noise
✅ Faster prioritisation
✅ Better mobile productivity

📅 Early May 2026

Outlook Updates – Follow Meetings You Can’t Attend

Can’t make a meeting? You’ll soon be able to “Follow” it instead.

Outlook will:

  • Prompt the organiser to record
  • Ensure you receive updates and follow‑ups
  • Keep you looped in automatically

✅ Perfect for busy directors
✅ No more chasing notes

📅 Mid–late April 2026

Onedrive & Sharepoint: Better File Control & Recovery

Edit Markdown (.md) files in the browser

You can now view and edit Markdown files directly in OneDrive and SharePoint, no downloads, no third‑party tools.

✅ Handy for devs & technical teams
✅ Faster documentation workflows

📅 Mid‑April–late May 2026

Onedrive Restore Individual Files and Folders

Instead of restoring entire libraries, admins can now:

  • Browse restore points
  • Recover specific files or folders only

✅ Faster recovery
✅ Less disruption
✅ Better protection against accidental deletion

📅 Late April–early May 2026

Sharepoint One‑Time Passcodes Are Going Away

Microsoft is retiring SharePoint One‑Time Passcode (OTP) access and moving to Microsoft Entra B2B guest accounts.

What this means:

  • External access will need proper guest accounts
  • Old sharing links may stop working if not updated

⚠️ This one will catch businesses out if ignored.

📅 Transition starts May 2026
📅 Full retirement by August 2026

Security & Identity: Quieter, Stronger Protection

Passkeys coming to Microsoft sign‑ins

Passwordless sign‑ins using Passkeys (FIDO2) are being pushed via Microsoft registration campaigns.

✅ Phishing‑resistant
✅ Fewer password resets
✅ Stronger security with less hassle

📅 April–May 2026

Entra Backup & Recovery

Microsoft Entra will now automatically back up critical identity data, allowing fast recovery of:

  • Users
  • Groups
  • Conditional Access policies
  • Authentication settings

✅ Big win for security resilience
✅ Faster disaster recovery

📅 Public Preview

Microsoft Copilot: Getting More Practical

Copilot Cowork

Copilot is moving from “answering questions” to actually doing work grounded in your emails, meetings, chats, and files.

You describe the outcome, Copilot gathers the context and gets moving.

✅ Less admin
✅ More execution
✅ Big productivity gains

📅 Rolling out late March–April 2026

Claude Sonnet Joins Copilot

Users will be able to choose Claude Sonnet alongside OpenAI models inside Copilot Chat (Frontier).

✅ More flexibility
✅ Better results for different tasks

📅 Rolling out now

✅ What businesses should do next

Nothing drastic, but a few smart checks help:

  • ✅ Review external sharing in SharePoint & OneDrive
  • ✅ Plan for guest access changes (Entra B2B)
  • ✅ Decide if Copilot licensing makes sense yet
  • ✅ Make sure Teams & Outlook users know what’s coming

Need Help Making Sense of Microsoft Changes?

Microsoft moves fast, and it’s easy to miss something that later causes disruption.

If you’d like help reviewing how these updates affect your Microsoft 365 setup, or want to stay ahead of security and productivity changes, we’re here to help.

📞 Just give us a call : 0204 511 9111