Applicable Products

• NetScaler Gateway
• Receiver for Android
• Receiver for Linux
• Receiver for Mac
• Receiver for Windows

Symptoms or Error

Sep 05, 2018  Citrix Receiver for Mac 12.6 (PDF Download). Documentation for this product version is provided as a PDF because it is not the latest version. For the most recently updated content, see the Citrix Receiver for Mac current release documentation.

Users may receive the following error when launching an application with Receiver for Windows 4.7, Receiver for Mac 12.5, Receiver for Android 3.12.2, Receiver for Linux 13.6 and newer:
Error: You have not chosen to trust '(CERT INFO)', the issuer of the server's security certificate. Contact your help desk for assistance.

Receiver for Mac

Receiver for Android

Solution

Important! This article is intended for use by System Administrators. If you are experiencing this issue and you are not a System Administrator, contact your organization’s Help Desk for assistance and refer them to this article.

This issue may be caused by an out-of-date intermediate certificate installed at NetScaler Gateway. This does not mean that the CA certificates currently being used is expired but the CA has since released newer versions of that certificate.

Verify the certificate bindings at the NetScaler Gateway to resolve this issue.

To confirm this, visit the NetScaler Gateway website using a web browser, and examine the certificate chain in the web browser. You may wish to cross-check this by repeating with more than one web browser (such as with Google Chrome and Mozilla Firefox). Then, compare all the certificates in the browser's certificate chain with the certificate chain at NetScaler Gateway.

Note: Compare all the serial numbers in the certificates and not just the Subject Name. If there are any mismatches in intermediate certificates, this is a possible cause.

Update NetScaler Gateway with the corresponding intermediate certificates, as they appear in the web browser. You can export the intermediate certificates from the web browser. If you used more than one web browser, it is possible that they yield different certificate chains. If so, use the newer certificate chain.

For more information about installing and linking an intermediate certificate with Primary CA on a NetScaler Gateway appliance, refer to CTX114146.

Problem Cause

The Receiver for Windows 4.7, Receiver for Mac 12.5, Receiver for Linux 13.6 and newer versions are going to validate the root certificates even if it trusts the intermediate, which is not the case with the browsers. If the browser trusts the intermediate, it trusts the server certificate, without going down to the root certificate and will display the newer version of the root from its certificate store and not the actual root certificate sent by the server or NetScaler Gateway.
In Receiver for Android 3.12.2, joint server certificate validation is turned off by default. If this policy is enabled in the Receiver without the correct set of certificates configured on the server/gateway, users may see the error message.

Additional Resources

• CTX221453 - Citrix Receiver - SSL Error when connecting via NetScaler

• Citrix Documentation - Receiver for Mac, Receiver for Android

• CTX114146 - How to Install and Link Intermediate Certificate with Primary CA on NetScaler Gateway

Important update about Citrix Receiver
Beginning August 2018, Citrix Receiver will be replaced by Citrix Workspace app. While you can still download older versions of Citrix Receiver, new features and enhancements will be released for Citrix Workspace app.

Citrix Workspace app is a new client from Citrix that works similar to Citrix Receiver and is fully backward-compatible with your organization’s Citrix infrastructure. Citrix Workspace app provides the full capabilities of Citrix Receiver, as well as new capabilities based on your organization’s Citrix deployment.

Citrix Workspace app is built on Citrix Receiver technology, and is fully backward compatible with all Citrix solutions.

For more information, please visit the Workspace app FAQ page.