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Eptura Knowledge Center

Verify a sucessful OAuth configuration

How to verify a successful OAuth configuration

Use the Test-OAuthConnectivity cmdlet to verify your OAuth configuration is correct. This cmdlet verifies that on-premise Exchange and Exchange Online endpoints can successfully authenticate requests from each other.

Learn more about the cmdlet at Microsoft

Authentication issues

Error ‘Failed to reach device’ displayed during authentication.


This error can be caused by any of the following:

  1. The screen is not connected to the internet.
  2. The authentication process was not completed within 15 minutes and the code expired.
  3. The screen does not have the required minimum software version installed. Learn more about the technical requirements

A previously authenticated screen is showing as unauthenticated.

  1. If the service account is unavailable for any reason, the Device Hub will show the screen as unauthenticated. When the issue with the service account has been resolved, authenticate the meeting room screen for OAuth. Learn how to authenticate a meeting room screen for OAuth
  1. If the email address for the Exchange room is changed, the Device Hub will show the screen as unauthenticated.  Learn how to authenticate a meeting room screen for OAuth

Issues connecting to Exchange

If problems are experienced when connecting to Exchange, check the following.

Check OAuth is enabled for Exchange online

An Exchange admin can run the following Powershell commands to determine if OAuth is enabled:

Install-Module -Name ExchangeOnlineManagement
Connect-ExchangeOnline -UserPrincipalName adminEmailId
Get-OrganizationConfig | Format-Table Name,OAuth* -Auto


If the result shows OAuth2ClientProfileEnabled = False, run the folowing:

Set-OrganizationConfig -OAuth2ClientProfileEnabled $true

Validate access to Exchange Web Services (EWS)

  1. Open a private browser page (incognito or private mode, depending on browser) and go to
  2. Enter user credentials for the Exchange room when prompted.

If an unauthorized access error is displayed, or the username/password prompt reappears, either the credentials for the Exchange room are incorrect or the account does not have the required permissions.

Check the correct Exchange Web Services (EWS) URL is saved in Calendar Settings

The EWS URL is saved when enabling OAuth for the calendar service. Learn how to enable OAuth for the calendar service