# UltraVNC Patch Download Failure

## Workaround for UltraVNC Patch Download Failure

### Problem

You are trying to download UltraVNC patches and the download fails.

### Cause

This might be due to some issue in the session keys and hash keys of the download link.

### Resolution

Follow the steps given below to resolve this issue:

1. Download the updates of the [UltraVNC application](https://www.uvnc.com/downloads/ultravnc.html) manually.
2. If you're using **DC Build Version 10.0.319 and above**
   - You'll be able to find an option to 'Upload' near the Download failed error message. Using the *Upload* option you can install this patch.
   - Else navigate to *Patch Mgmt* -> *Patches* -> *Downloaded Patches* -> Search for the Bulletin ID **TU-519** and click on the *Patch ID* to find the *Patch Name*. Then go to Upload Patches -> Search for the Bulletin ID **TU-519** which has the same *Patch Name* and click on *Install Patch*.
3. If you're using **DC Build Version below 10.0.319**

   **Note:** To find the *Patch Name*, navigate to *Patch Mgmt* -> *Patches* -> *Downloaded Patches* -> Search for the Bulletin ID **TU-519** and click on the *Patch ID*. There'll be a pop-up in which you'll find the *Patch Name* listed.

   - Rename the downloaded file in the below format:
     - For UltraVNC (1.2.3.0) - ***311853-UltraVNC_1_2_30_X86_Setup.exe***
     - For UltraVNC (x64) (1.2.3.0) - ***311854-UltraVNC_1_2_30_X64_Setup.exe***
   - Navigate to the *<Desktop Central Installed Directory>\webapps\DesktopCentral\Store* and place the renamed files.
   - Then go to *Missing Patches* -> Search for the Bulletin ID **TU-519** which has the same *Patch Name* and click on *Install Patch*.

If the issue persists even after following the above-mentioned resolutions, please feel free to contact [Support](mailto:desktopcentral-support@manageengine.com).