Citrix Receiver Desktop

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Description The Citrix Workspace app allows for secure, unified access to all of your SaaS apps, web apps, virtual apps, files, and desktops. If your company uses Citrix, simply login with your company credentials to access all of the resources you need to be productive from anywhere. Disconnect using the Citrix menu. Light Version: Click the Citrix menu icon in the top center of the browser window (figure 1) Click the three dots (figure 2) Click Disconnect (figure 3). Figure 1: Figure 2: Figure 3: Desktop: Click the down arrow icon in the top center of the Window (figure 4) Click Disconnect (figure 5). Figure 4: Figure 5. Citrix Gateway: Provides a single point of access to let users connect to the system from outside the corporate security system. Basic functions of a Citrix Desktop. Unlike a regular desktop that runs locally on a computer, the elements of Citrix Desktop run on a remote host. Something as seemingly uncomplicated as a Citrix remote desktop not launching can be due to a number of causes. Here are four of the most common. Troubleshooting any issue in a Citrix environment is usually a long, drawn-out exercise that can involve several components, from a Citrix Receiver on a client all the way to your Citrix servers.

  • Receiver for Windows

Symptoms or Error

Overview

This article discusses error messages that may occur while launching TLS or DTLS encrypted sessions when using the Citrix Receiver for Windows 4.12 and describes the possible causes of each error message. It also provides troubleshooting steps for each issue. In addition, this article is intended for system administrators.

If these troubleshooting steps do not resolve your issue, please use a network tracing tool such as Wireshark to capture TLS and DTLS network traffic. TLS and DTLS network traffic should be captured at the client device, Citrix NetScaler Gateway, and VDA (if possible). Please be ready to supply this information to your Citrix support representative when requested.

Symptoms or Errors

When attempting to connect to an Application or Desktop using Citrix Receiver for Windows 4.12, you may see connection failures possible related to the new Crypto Kit updates.

To troubleshoot the issues, follow the next steps based on the error messages.

Error MessageSolution
“The published resource is not available currently. Please contact system administrator for further assistance”.
“The Citrix SSL Server you have selected is not accepting any connections”.
“SSL error 4: Operation completed successfully”.
Go to resolution 1
“Socket Operation on Non-socket”.Go to resolution 2
“SSLv3 alert handshake failure”.Go to resolution 3

Solution

Resolution 1

If you receive one of the error messages below, while attempting to connect to an Application or Desktop using Citrix Receiver for Windows 4.12 via Citrix NetScaler Gateway. Please follow the instructions listed below.

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Error Messages:

  • The published resource is not available currently. Please contact system administrator for further assistance.
  • The Citrix SSL Server you have selected is not accepting any connections.
  • SSL error 4: Operation completed successfully

Instructions

Please follow the below steps for configuring the required cipher suites on NetScaler Gateway

Citrix receiver desktop app
  1. Navigate to Configuration tab > Traffic Management > SSL and Select Change advanced SSL Settings.

  2. Check the box labelled ‘Enable Default Profile’ and select OK.

  3. Select Yes when the following prompt message appears.

  4. To verify if the Default profile was enabled, repeat step 1.

  5. Then, navigate to Configuration tab > System > Profiles > SSL Profile > Click on ns_default_ssl_profile_backend and Select Edit

  6. Under the SSL Ciphers section, click on the pencil to edit. Then, remove the DEFAULT_BACKEND option by clicking the ¬minus (¬–) symbol next to it.

  7. Click Add.

  8. Then, search for SHA2 and RSA options. Move them under Configured.

  9. First click OK, then Done to save the configuration.

Citrix Receiver Desktop

Resolution 2

If you receive a “Socket Operation on Non-socket” error message while attempting to connect to an Application or Desktop using Citrix Receiver for Windows 4.12, this is because the configuration on the client and/or VDA is currently un-supported. For a supported matrix configuration, go to Receiver for Windows Crypto Kit Updates article.

Used case

For instance, if the setup has FIPS compliance mode enabled and the COM cipher set has been configured on the Client and VDA, session launch fails with Citrix Receiver for Windows 4.12 due to lack of common cipher suite. You can change the configuration to GOV or ANY on client and VDA to resolve the same.

Resolution 3

If you receive “SSLv3 alert handshake failure” error message, this is because certain deprecated RSA cipher suites have been explicitly disabled in Receiver. Some configurations still require these deprecated cipher suites. You can re-enable these cipher suites using the Receiver Group Policy template as follows.

Instructions

  1. Open the Citrix Receiver GPO administrative template by running gpedit.msc

  2. Navigate to Administrative Templates > Citrix Components > Citrix Receiver > Network Routing > Deprecated Cipher Suites.

  3. Right-click on “Deprecated ciphers suites” and select Edit

  4. Select Enabled the policy and check the TLS_RSA_ option

  5. Click Apply. Then, Ok to save the configuration changes.

Citrix Receiver Desktop
  1. Login to your Citrix Desktop.
  2. Next you will move your mouse to the top of the screen and click on the black rectangle to show the drop down menu.
  3. Click on Window button to shrink the Citrix Desktop Viewer Window so you can adjust the size.
  4. Move your mouse to the right side until the horizontal arrow appears and then drag the Citrix Desktop Viewer window onto your other screen or screens.
  5. After the Citrix Desktop Viewer window appears on all your screens, click the drop down menu and select Full Screen.
  6. After clicking the full screen button, your desktop should appear across all the monitors.
Receiver

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