Microsoft Teams: Auto-detect spoken language in multilingual meetings

Introduction

Microsoft Teams is introducing automatic spoken language detection in multilingual meetings to improve caption, transcript, and interpretation accuracy. Teams will automatically detect each speaker’s spoken language and update it in real time as the conversation evolves. Manual spoken language selection will no longer be available. This applies to live captions and transcripts when Interpreter is enabled or when multilingual speech recognition is turned on in meeting options. The change helps ensure consistent recognition across multilingual meeting scenarios.

This message is associated with Microsoft 365 Roadmap ID 558543.

When this will happen

• Targeted Release: We will begin rolling out in early April 2026 and expect to complete in early April 2026.
• General Availability (Worldwide): We will begin rolling out in mid-April 2026 and expect to complete in mid-April 2026.

How this affects your organization

Who is affected

• This change affects users who participate in multilingual meetings in Microsoft Teams when Interpreter is enabled by a user licensed for Microsoft 365 Copilot, or when multilingual speech recognition is enabled by a meeting organizer or co‑organizer licensed for Microsoft 365 Copilot or Teams Premium, on Android, Desktop, iOS, Mac, and Web.

What will happen

• Teams will automatically detect each speaker’s spoken language and update it in real time during multilingual meetings.
• Manual spoken language selection will no longer be available in supported multilingual meeting scenarios.
• Captions and transcripts will update automatically based on detected languages when Interpreter is enabled or when multilingual speech recognition is turned on in meeting options.
• Users may notice a simpler meeting setup experience and more consistent spoken language handling across supported multilingual meetings.
• Interpretation quality may improve, including recognition of names and industry terminology.
• Interpreter will support your organization’s Custom Dictionary from the Microsoft 365 admin center.
• Traditional Chinese is now supported.
• This update is available only for the 10 languages currently supported for Interpreter, live captions, and transcripts in multilingual meetings: English, Spanish, Portuguese, Japanese, Simplified Chinese, Traditional Chinese, Italian, German, French, and Korean.
• The feature will be on by default for tenants already using multilingual meeting capabilities.

What you can do to prepare

No admin action is required.

To prepare:

• Inform users that manual spoken language selection will no longer be available in supported multilingual meeting scenarios.
• Remind users that automatic spoken language detection works only for the 10 supported languages listed above.
• Review and maintain Custom Dictionary entries in the Microsoft 365 admin center.
• Update any internal training, adoption materials, or support documentation that describes multilingual or interpreted meeting experiences.
• Review updated Learn documentation when it becomes available.

Compliance considerations

No compliance considerations identified. Review as appropriate for your organization.