# Microsoft Remote Connectivity Analyzer

> A free web-based diagnostic tool that helps IT administrators test and troubleshoot connectivity with Microsoft 365 services.

The Microsoft Remote Connectivity Analyzer runs real-time diagnostic tests against Microsoft 365 services including Exchange Online, Microsoft Teams, Microsoft Copilot, and Skype for Business. It validates configuration, connectivity, and authentication directly from the browser with no installation required. Results include step-by-step diagnostic output with issues and recommendations.

## Exchange Online Tests

- [DNSSEC and DANE Validation Test](https://testconnectivity.microsoft.com/tests/O365DaneValidation/input): Validate your domain DNSSEC and DANE setup using Exchange Online DNS resolvers for outbound mail.
- [MTA-STS Validation Test](https://testconnectivity.microsoft.com/tests/O365MtaStsValidation/input): Validate your domain MTA-STS policy and configuration for secure inbound mail transport.
- [Exchange Online Custom Domains DNS Connectivity Test](https://testconnectivity.microsoft.com/tests/O365ExchangeDns/input): Check your domain DNS for Exchange Online mail delivery and Outlook connectivity issues.
- [Exchange Online Outbound Connector EDNS Connectivity Test](https://testconnectivity.microsoft.com/tests/O365ResolveSmarthost/input): Test EDNS connectivity for Exchange Online outbound connectors using smarthost resolution.
- [Exchange ActiveSync](https://testconnectivity.microsoft.com/tests/O365Eas/input): Simulate a mobile device connection to Exchange using ActiveSync to confirm sync functionality.
- [Synchronization, Notification, Availability, and Automatic Replies](https://testconnectivity.microsoft.com/tests/O365EwsTask/input): Verify EWS operations like sync, notifications, and OOF replies to confirm external access works.
- [Service Account Access (Developers)](https://testconnectivity.microsoft.com/tests/O365EwsAccess/input): Validate a service account mailbox access, item management, and Exchange impersonation rights.
- [Outlook Connectivity](https://testconnectivity.microsoft.com/tests/O365Ola/input): Simulate Outlook connectivity from the internet using RPC and MAPI over HTTP to detect issues.
- [Inbound SMTP Email](https://testconnectivity.microsoft.com/tests/O365InboundSmtp/input): Simulate how an external mail server delivers inbound SMTP messages to your domain.
- [Outbound SMTP Email](https://testconnectivity.microsoft.com/tests/O365OutboundSmtp/input): Check outbound mail IP for DNS, Sender ID, and blacklist issues affecting mail delivery.
- [POP Email](https://testconnectivity.microsoft.com/tests/O365Pop/input): Test POP client connectivity to a mailbox for login and message retrieval issues.
- [IMAP Email](https://testconnectivity.microsoft.com/tests/O365Imap/input): Simulate an IMAP4 client connecting to a mailbox to test authentication and retrieval.
- [Free/Busy](https://testconnectivity.microsoft.com/tests/FreeBusy/input): Verify if Microsoft 365 and on-premises mailboxes can share calendar free/busy info.
- [Outlook Mobile Hybrid Modern Authentication Test](https://testconnectivity.microsoft.com/tests/O365OlkMobHma/input): Check if your on-premises Exchange supports Hybrid Modern Authentication for Outlook mobile.
- [Mailbox Provisioning Test](https://testconnectivity.microsoft.com/tests/O365ProvisioningUserMaibox/input): Verify mailbox existence and provisioning in Azure AD and Exchange Online for a given address.

## On-Premises Exchange Tests

- [Exchange ActiveSync](https://testconnectivity.microsoft.com/tests/Eas/input): Simulate mobile device connection to Exchange via ActiveSync to confirm mail and sync functionality.
- [Synchronization, Notification, Availability, and Automatic Replies](https://testconnectivity.microsoft.com/tests/EwsTask/input): Verify EWS functions like sync, notifications, and OOF replies to confirm external access is working.
- [Service Account Access (Developers)](https://testconnectivity.microsoft.com/tests/EwsAccess/input): Test a service account mailbox access, item creation, and Exchange impersonation permissions.
- [Outlook Connectivity](https://testconnectivity.microsoft.com/tests/Ola/input): Simulate Outlook internet connectivity using RPC and MAPI over HTTP to detect connection issues.
- [Inbound SMTP Email](https://testconnectivity.microsoft.com/tests/InboundSMTP/input): Simulate external SMTP delivery to your Exchange domain to verify inbound mail routing.
- [Outbound SMTP Email](https://testconnectivity.microsoft.com/tests/OutboundSMTP/input): Check outbound mail IP for DNS, Sender ID, and blacklist issues that affect mail delivery.
- [POP Email](https://testconnectivity.microsoft.com/tests/Pop/input): Test POP connectivity to verify mailbox login, message retrieval, and authentication status.
- [IMAP Email](https://testconnectivity.microsoft.com/tests/Imap/input): Simulate IMAP client connection to test mailbox authentication and message retrieval.
- [SSL Server Test](https://testconnectivity.microsoft.com/tests/SslServer/input): Check SSL endpoint for valid certificate, TLS 1.2 support, cipher compliance, and trusted CA chain.
- [MrsProxy Test](https://testconnectivity.microsoft.com/tests/MrsProxy/input): Test MRS Proxy connectivity for cross-forest and hybrid mailbox moves.

## Microsoft Teams Tests

- [Teams DNS Connectivity Test](https://testconnectivity.microsoft.com/tests/TeamsDns/input): Diagnose Teams connectivity when DNS fails. Validate DNS records, service reachability, and name resolution.
- [Teams Sign in](https://testconnectivity.microsoft.com/tests/TeamsSignin/input): Fix when a user cannot sign in to Teams. Validate account status, access policies, and recent sign-in activity.
- [Teams Guest Sign in](https://testconnectivity.microsoft.com/tests/TeamsGuestSignin/input): Unblock a guest who cannot sign in to Teams. Validate invitation status, access policies, and authentication.
- [Teams Calendar Tab](https://testconnectivity.microsoft.com/tests/TeamsCalendarMissing/input): Restore the Calendar tab when it is missing or empty in Teams. Validate Exchange integration and permissions.
- [Teams PSTN Calling Dial Pad](https://testconnectivity.microsoft.com/tests/TeamsDialpadMissing/input): Bring back the PSTN dial pad when it does not appear. Validate calling policies, phone system setup, and licenses.
- [Teams Presence Based on Calendar Events](https://testconnectivity.microsoft.com/tests/TeamsCalendarPresence/input): Correct presence when calendar events do not update status. Validate Outlook sync and presence mapping.
- [Teams Exchange Integration](https://testconnectivity.microsoft.com/tests/TeamsExchangeIntegration/input): Fix Teams and Exchange integration failures. Validate mailbox connectivity, permissions, and hybrid or cloud setup.
- [Teams Meeting Delegation](https://testconnectivity.microsoft.com/tests/TeamsMeetingDelegation/input): Enable delegation when scheduling on behalf of someone fails. Validate delegate permissions and mailbox sync.
- [Teams Meeting Recording](https://testconnectivity.microsoft.com/tests/TeamsRecording/input): Resolve when recording does not start or save. Validate recording policies, storage location, and compliance.
- [Teams Channel Meeting](https://testconnectivity.microsoft.com/tests/TeamsChannelMeeting/input): Troubleshoot Teams scheduling channel meetings. Validate channel meeting permissions, meeting policies, and Microsoft 365 group email address.
- [Teams Voicemail](https://testconnectivity.microsoft.com/tests/TeamsVoicemail/input): Restore voicemail when messages do not arrive or playback fails. Validate voicemail policies, routing, and mailbox link.
- [Teams Android Desk Phone Sign in](https://testconnectivity.microsoft.com/tests/TeamsPhoneDeviceSignIn/input): Fix when an Android Desk Phone cannot sign in to Teams. Validate access, compliance, and device registration.
- [Microsoft Teams Rooms Sign in](https://testconnectivity.microsoft.com/tests/TeamsMTRDeviceSignIn/input): Fix when a Teams Room cannot sign in. Validate access, compliance, and device registration for the room.
- [Teams AOSP Migration Readiness](https://testconnectivity.microsoft.com/tests/TeamsAOSPMigration/input): Confirm AOSP migration readiness for your org. Validate required settings, compliance, and device readiness.
- [Teams Federation and Interoperability](https://testconnectivity.microsoft.com/tests/TeamsFederation/input): Enable chat and meetings with external users. Validate external access settings, policies, and partner connectivity.
- [Teams Premium Details](https://testconnectivity.microsoft.com/tests/TeamsPremiumDetails/input): Verify Teams Premium features for users. Validate licensing, advanced meeting options, and policy assignments.
- [Teams Shared Channel Add Member](https://testconnectivity.microsoft.com/tests/TeamsExternalCollab/input): Add members to a shared channel when invites fail. Validate external access, permissions, and compliance policies.
- [Teams Internal User Search](https://testconnectivity.microsoft.com/tests/TeamsInternalUserSearch/input): Test if a guest or internal user can be found in Teams. Validate directory, permissions, and search visibility.

## Microsoft Copilot Tests

- [Copilot License Details](https://testconnectivity.microsoft.com/tests/CopilotLicenseDetails/input): Verify that your account and tenant meet all requirements to use Microsoft Copilot features.
- [Copilot Agent Functionality in Microsoft Teams](https://testconnectivity.microsoft.com/tests/CopilotTeamsExtensibility/input): Diagnose issues blocking Copilot agents in Teams, including setup, permissions, or availability.
- [Copilot Connector Checker](https://testconnectivity.microsoft.com/tests/CopilotServiceNowGraphConnectors/input): Diagnose configuration or connection issues preventing ServiceNow connectors from working with Copilot.

## Skype for Business Tests

- [Skype for Business Server Remote Connectivity Test](https://testconnectivity.microsoft.com/tests/OnPremisesSfB/input): Test remote connectivity to on-premises Skype for Business servers.
- [Skype for Business Autodiscover Web Service Remote Connectivity Test](https://testconnectivity.microsoft.com/tests/OnPremisesSfBMobileAutoD/input): Validate Autodiscover web service for Skype for Business mobile clients.

## Optional

### Supported Protocols

IMAP4, POP3, SMTP, Exchange ActiveSync, Exchange Web Services (EWS), RPC over HTTP, MAPI over HTTP, DNS, SSL/TLS, DANE, MTA-STS

### How to Use

1. Navigate to https://testconnectivity.microsoft.com
2. Select a test category (Exchange Online, Teams, Copilot, etc.)
3. Choose the specific diagnostic test
4. Enter the required information (email address, domain, etc.)
5. Authenticate if required (some tests need admin or user credentials)
6. Click "Perform Test" and review the step-by-step diagnostic output

### Contact
- Mail to rcafb@microsoft.com
- Tool issues: https://testconnectivity.microsoft.com
- Microsoft 365 support: https://support.microsoft.com