You cannot run this script on the current system. For more information about running scripts and setting execution policy

Could you please try below a

Install the module for all accounts: Installing to AllUsers places the module under C:\Program Files\WindowsPowerShell\Modules, which is visible to service accounts. Alternatively copy the module folder to that pathc
```
   # Run in an elevated admin prompt
   Install-Module -Name VstsTaskSdk -Scope AllUsers -Force
```

Check / adjust execution policy; in PowerShell:

   Set-ExecutionPolicy RemoteSigned -Scope Process