The Check for Updates repeatedly fails

Verify that the server selected for patch download is correctly configured. For more information, see Understanding the Preferences General Settings.
If the selected option is to download patches directly from the Arcserve Support server, then check the Patch Manager Log (APMLog.log) for additional information.
If the selected option is to download patches from a staging server, then check that the default website can be browsed in that staging server.
If you are unable to browse the default website, it may be due to an incomplete or improper installation of IIS. Verify proper installation of IIS.
If Arcserve Backup Patch Manager is configured to use Proxy settings, verify that the proxy credentials are entered correctly. For more information, see Understanding the Preferences Proxy Settings.
If the selected option is to download patches from a staging server, verify the staging server is communicating through the proper port. If the port number is not correct, perform the following steps at the agent side:
1. Open the APMSettings.ini file.
  Note: The APMSettings.Ini file is located in the following directory:
  
  X:Program Files\CA\SharedComponents\APM\Patch Manager
2. Under the heading "[DownloadServer]" change the Port value to match the port number that the staging server is using.
If the problem persists, contact Arcserve support for online technical assistance and a complete list of locations, primary service hours, and telephone numbers.