A solution for running expo on local machine error on Windows :

  1. Open Windows PowerShell with Run as Administrator
  2. Run this command: Set-ExecutionPolicy Unrestricted

Problem solved.

Explanation

Issue:

expo.ps1 cannot be loaded because running scripts is disabled on this system. For more information, 
see about_Execution_Policies at https:/go.microsoft.com/fwlink/?LinkID=135170.

So if you ever get this error, simply you can follow these steps to solve the issue-

Step 1:

Open Windows PowerShell with Run As Administrator.

Step 2:

As you see the error is about_Execution_Policies, first to see what's there in the present execution policy. Use this command on Windows PowerShell to get it

Get-ExecutionPolicy

Here you'll see 'Restricted'. So, this is the main reason- running scripts on this system is 'Restricted'.

Step 3:

Now we need to change this policy to allow the operation. Use this command to make it Unrestricted -

Set-ExecutionPolicy Unrestricted

Here you'll get a prompt message. Press Y to change it

That's it. To ensure, you may check the execution policy status by this command again

Get-ExecutionPolicy

You'll get the output 'Unrestricted'

The problem is solved. Now you can use expo on your machine.

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