> Source: [sk110414](https://support.checkpoint.com/results/sk/sk110414)

# sk110414 - Citrix Receiver cannot connect to Citrix XenApp server via Mobile Access Blade Citrix Services

| Property | Value |
|----------|-------|
| Solution ID | sk110414 |
| Date Created | 2016-03-08 |
| Last Modified | 2017-10-20 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |

## Symptoms

- * When users launch Remote Application on Citrix StoreFront (or Web Interface), Citrix Receiver cannot connect to Citrix XenApp server via Mobile Access Blade - Citrix Services.  
  The following error dialog is shown.  

  Citrix Receiver  
  ---------------  
  Unable to launch your application. Contact your help desk with the following information:  
  Cannot connect to Citrix XenApp server.SSL Error 61: You have not chosen to trust "/C=/ST=/L=/O=r7720-std..ty29s3/OU=", the issue of the server's security certificate.  
  ---------------  
* CTX101990: Error: "The server certificate received is not trusted (SSL Error 61)" for Receiver Users  
  Refer to: <https://support.citrix.com/article/CTX101990>

## Cause

No fix is required; the system is functioning as designed.

Check Point gateways, by default, use a certificate created by the Internal Certificate Authority on the Security Management Server as their server certificate.

**Citrix Receiver requires a valid trusted certificate (3rd Party certificate) to be installed on the Mobile Access Blade.**

For more details, please refer to the following sections in the [Mobile Access R77 Versions Administration Guide](https://sc1.checkpoint.com/documents/R77/CP_R77_Mobile_Access_WebAdmin/html_frameset.htm) .

* 'Applications for Clientless Access \> Citrix Services'

* 'Mobile Access Blade Configuration and Settings \> Server Certificates'

## Solution

Import a valid trusted certificate to Mobile Access Blade.

[sk69660 : How to generate Server Certificate Signing Request (CSR) and import the new 3rd Party certificate to Mobile Access Blade](http://supportcontent.checkpoint.com/solutions?id=sk69660)

---

# Agent Instructions

This content is from the Check Point Support Center (https://support.checkpoint.com), the official knowledge base for Check Point cybersecurity products.

## Navigating This Knowledge Base

- **Complete index**: [llms.txt](https://support.checkpoint.com/llms.txt)
- **All SK articles**: [SecureKnowledge Sitemap](https://support.checkpoint.com/sitemaps/secureknowledge-sitemap-index.xml)
- **SK article URL pattern**: `https://support.checkpoint.com/results/sk/{skId}`
- **Markdown responses**: AI bot User-Agents automatically receive `text/markdown` content