Error: "Invalid content image, Failed to download file" seen during PAN-OS Software download

• When downloading PAN-OS software, the job fails with error "Invalid content image, Failed to download file."
• Configd.log (less mp-log configd.log) contains error "download invalid object size (0)"
• The image does not show as downloaded in the GUI and the "Download" button still appears
• When executing "request system software info" from the CLI, the software version is seen with size "0"

• Palo Alto Networks Firewall or Panorama
• Supported PAN-OS

The software package is corrupt and has to be manually deleted and re-downloaded.

Execute the commands below from the CLI, as the image does not appear in the GUI:

1. Delete the corrupt software image:

   • > delete software version {version}

2. Run a software check to get a fresh list of software images

   • > request system software check

3. Download the fresh version of the software

   • > request system software download version {version} 

If the download still fails, consider temporarily disabling the "Verify Update Server Identity" option and perform the download.

• In GUI "Verify Update Server Identity" can be found under
  • Device > Setup > Services
• From the CLI execute the commands below: 

  > configure
  # set deviceconfig system server-verification no
  # commit