Patch Download Failure - "Error 403" or "Unknown Host Exception"

Problem

You are trying to download patches of Microsoft/other vendors. However Patch download fails with error message: "Error Code 403 or Unknown Host Exception".

Cause

Error code 403 occurs when the web server is not reachable or access to the server has been denied. This might happen due to various reasons such as, forbidden access, or connectivity issues.

Resolution

1. Ensure that the configured Proxy settings has permission to download the installabe files from the below mentioned websites
   1. http://download.microsoft.com - for Microsoft applications
   2. http://download-installer.cdn.mozilla.net/ - for Mozila Firefox & Mozilla Thunderbird
   3. http://*.adobe.com - for Adobe patches, flash player, Adobe air
   4. http://fpdownload.macromedia.com - for Adobe Shockwave Player
   5. http://javadl.sun.com - for Java updates
   6. http://*.apple.com/ - for Mac OS updates, Quick time player, Itunes  & JRE 1.6
   7. http://cache-download.real.com - for Real player
   8. http://*.oracle.com/ - for JRE 1.7
   9. http://*.sourceforge.net/ - for Open Office
   10. http://dl.google.com - for Google chrome s
   11. http://ftp.jaist.ac.jp - for Mozilla Firefox 3.6
   12. http://www.piriform.com - for CCleaner
   13. http://www.tightvnc.com - for TightVNC
   14. http://*.videolan.org/ - for TightVNC
   15. http://*.tuxfamily.org - for Notepad ++
   16. http://www.rarlab.com - for WinRAR
   17. http://cdn01.foxitsoftware.com - for Foxit Reader
   18. http://ftp.iitm.ac.in - for Libre Office
   19. https://*.cdburnerxp.se- for CDBurnerXP
   20. http://download.winzip.com - for Winzip
   21. http://*.download.pdfforge.org - PDF Architect
   22. http://allwaysync.com - for AllwaySync
   23. http://ftp.gimp.org - for GIMP
       
       
2. Retry the process of downloading the patch from the vendors website.
3. In case if this problem continues, kindly Contact Support

Applies to: Patch Deployment, Patch Configuration, Patch Download

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

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