# Patch Download Failure - "Connection Time Out / Bug in Authorization Handling / Connection Refused"

## Problem

You are trying to download patches of Microsoft/other vendors. However, patch download fails with an error message:

"Connection Time Out / Bug in Authorization Handling / Connection Refused"

## Cause

Patch download fails in the following scenarios related with proxy issues:

1. Proxy Not Defined or Wrong Password or Wrong Proxy Host  
   or  
   Wrong Proxy Port or Proxy User Authentication Issue
2. Low bandwidth / Delay in Downloading Patches
3. Downloads from the Endpoint Central Server (java.exe) is blocked by the firewall/proxy

## Resolution

1. Ensure that you have provided the correct proxy details.
2. Retry the process to download the patch or the software from the respective vendor's website.
3. Verify "Application Control Policy" settings in your firewall/proxy, to ensure that downloads from the Endpoint Central server (java.exe) are not blocked.

In case the problem continues, [Contact Support](mailto:desktopcentral-support@manageengine.com).

**Applies to:** Patch Deployment, Patch Configuration, Patch Download  

**Keywords:** Patch Management, Deploy Patches, Configure Patch Installation, Download Patches