Unable to update Plesk: Error: Failed to read product information from the file: Can't process products.inf3

Symptoms

• Plesk Installer hangs on the products.inf3 file downloading:

  CONFIG_TEXT: Checking for installed packages...
  File downloading products.inf3:

• Plesk Installer fails with the next error:

  CONFIG_TEXT: File downloading products.inf3: File downloading versions.inf3:
  ERROR: Failed to read product information from the file : Can't process products.inf3: Failed to download the package http://example.com/parallels/products.inf3:
  The requested URL returned error: 404
  
  Can't process versions.inf3: Failed to download the package http://example.com/parallels/versions.inf3:
  The requested URL returned error: 404

• Automatic Plesk updates installation fails with the next error in the /var/log/plesk/install/autoinstaller3.log file:

  CONFIG_TEXT: FileFetcher new object: target_dir=/root/parallels/, main_source_url=ftp://example.com/parallels/
  FileFetcher: get file (~empty)/products.inf3
  File downloading products.inf3: Error: server response timeout, retry...
  Error: server response timeout, retry...
  Error: server response timeout, retry...
  FileFetcher: get file (~empty)/versions.inf3
  File downloading versions.inf3: Error: server response timeout, retry...
  Error: server response timeout, retry...
  Error: server response timeout, retry...
  Error: Failed to read product information from the file : Can't process products.inf3: Failed to download the package ftp://example.com/parallels/products.inf3:
  server response timeout

• A custom mirror repository is configured in the /root/.autoinstallerrc file:

  CONFIG_TEXT: SOURCE_TYPE="network"
  SOURCE="http://example.com/parallels/"

  OR

  CONFIG_TEXT: SOURCE_TYPE="network"
  SOURCE="ftp://example.com/parallels/"

Cause

The custom repository is unreachable and/or incorrectly configured.

Resolution

1. Connect to the server via SSH.

2. Verify the URL of the repository in the /root/.autoinstallerrc file regarding the typos and edit it if it is required:

   CONFIG_TEXT: [BEFORE]
   
   SOURCE_TYPE="network"
   SOURCE="ftp://example.com/parallels/"
   
   [AFTER]
   
   SOURCE_TYPE="network"
   SOURCE="http://example.com/parallels/"

3. If the repository is still unreachable, then remove it:

   # mv /root/.autoinstallerrc /root/.autoinstallerrc.bak

   in order to continue using the default Plesk repository.