Not yet. Microsoft Teams uses TLS 1.2 and SRTP for communication encryption, both relying on classical key exchange. Microsoft is investing in PQC through SymCrypt but Teams has not completed the transition.
Key Takeaway: Microsoft Teams is NOT quantum safe. Scan your Microsoft 365 environment with QScout. Monitor Microsoft 365 roadmap for Teams PQC announcements. Enable E2EE for sensitive 1:1 calls as an interim measure.
Microsoft Teams is NOT quantum safe today. **Current State:** Teams uses TLS 1.2 for signaling and SRTP (Secure Real-time Transport Protocol) for media encryption. Authentication goes through Microsoft Entra ID (Azure AD) using classical OIDC/OAuth flows with RSA/ECDSA certificates. **PQC Progress:** Microsoft's PQC efforts will eventually benefit Teams: - **SymCrypt**: Microsoft's crypto library includes ML-KEM and ML-DSA — the foundation for future Teams PQC support. - **Teams E2EE**: Available for 1:1 calls but not group calls. Uses classical key exchange. - **Microsoft 365**: The broader platform has not announced PQC migration timelines. **HNDL Risk:** Teams carries sensitive enterprise communications: executive meetings, HR discussions, legal calls, and financial planning sessions. Intercepted Teams traffic could be decrypted by a future quantum computer if key exchange material is captured. **What Organizations Should Do:** Inventory all Teams integrations, bots, connectors, and Direct Routing/SBC configurations. Use QScout to map your Microsoft 365 cryptographic surface including Teams, Exchange, SharePoint, and OneDrive.
| Full Name | Microsoft Teams |
| Category | communication |
| Quantum Vulnerability | Teams TLS signaling and SRTP key exchange use classical algorithms vulnerable to quantum attack. Meeting content encryption keys derived via classical key exchange are the weak link. |
| NIST Status | Microsoft SymCrypt includes NIST PQC implementations. Teams-specific PQC deployment timeline is not publicly announced. |
| Deprecation Timeline | Microsoft has not published a Teams-specific PQC migration timeline. |
| Replaced By | Teams will migrate to ML-KEM for key exchange via SymCrypt library updates |
Scan your Microsoft 365 environment with QScout. Monitor Microsoft 365 roadmap for Teams PQC announcements. Enable E2EE for sensitive 1:1 calls as an interim measure.
QScout discovers every instance of Microsoft Teams across your infrastructure in 7 days — with zero operational disruption. 72-hour time to first findings.