Plesk scheduled task fails to fetch URL: Exception calling getresponse with 0 argument(s) the operation has timed out

Symptoms

Scheduled task to fetch URL with PowerShell script is set in Subscriptions > example.com > Scheduled tasks.

On attempt to process large .xml files, this task fails:

Exception calling getresponse with "0" argument(s): The operation has timed out

Cause

Execution time limit of PowerShell script was exceeded.

Resolution

Note: if you don’t have administrative access to Plesk server via RDP, contact your hosting provider regarding the issue

1. Connect to Plesk server using RDP

2. Navigate to
%plesk_dir%AdditionalSchedulerfolder and open fetch_url.ps1.
   Add
webRequest.timeoutvariable with value of 60000  in the Try block to the script:

   ...
   Try {
   [System.Net.ServicePointManager]::ServerCertificateValidationCallback = {$true}
   $webRequest = [net.WebRequest]::Create($url)
   $webRequest.timeout = 60000;
   ...

   This equals to 60 seconds. 

3. To check if the script works, run it manually at Subscriptions > example.com > Scheduled tasks > Run Now. In order to find appropriate value, the limit can be gradually raised.