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SSO Log In Error: We're Having Trouble Signing You In

Resolve the AVAIL Desktop SSO error by updating the redirect URI to meet current Microsoft Identity Platform requirements

The Problem

In some SSO environments, users may encounter the following error message when attempting to log into the AVAIL Desktop application:

Error message: Redirect URIs with urn: schemes are prohibited.

The Solution

AVAIL originally changed the redirect value in 2019 to be in compliance with the Microsoft Identity Platform (formerly Azure 2.0). We updated our authentication libraries from ADAL to MSAL. While using the urn: scheme was supported by Microsoft in the past, it is no longer supported with MSAL. 

You can solve this issue by updating the ADSF.config file and changing the Redirect value from

 urn:avail-login to https://getavail.com

Helpful tip: The ADSF.config file can be found at C:\Program Files\AVAIL. You can update the file on individual machines or update during the deployment process.

Deployment Steps

Redeploying  AVAIL with the new redirect Uri can be done using the Exe installer or MSI deployment.
  • If you are using MSI deployment, change the value of the AD_REDIRECT_URI switch.
  • If you are deploying the EXE installer, change the value ActiveDirectoryRedirectUri switch.
    • The redirect line in the file should look like this:
    • <add key="ActiveDirectoryRedirectUri" value="https://getavail.com"/>

Additional Steps

IT may also need to add https://getavail.com to the Mobile and desktop applications Redirect URI list in Azure (see below).

Once these changes have been made, ask users to try logging in again and contact support@getavail.com if they still encounter any issues.