Graph API Explorer > Get User Access Token > always gives "Token Expired"; What's wrong?! & How to overcome?

Question

A little Update* at the end of the question.

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It is the very first time I try to use Facebook API. I am following this video tutorial. I logged in correctly to Facebook and after that I registered to developers.facebook.com I followed these steps:

• Click Tools & Support
• Under Tools click Graph API Explorer
• Select Graph API Explorer
• Select Get User Access Token
• Select All the options from both User Data Permissions & Extended Permissions
• Click Get Access Token - After that I click three OKay's with default settings.

I got what is shown in this image:
I clicked on refresh many times, and I also tried ALT+T, but it always gives Token Expired.

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Update*

I copied the access token despite the message "Token Expired" is still exist, and I continue following the tutorial, and it works OK!!

I am happy that it works now. But what is the wrong that yields this alert message?!

Answer 1

Right-click on the clock in the taskbar. Select "Adjust date/time."

Set Time Automatically: Toggle on "Set time automatically."

Set Time Zone Automatically: toggle on "Set time zone automatically."

Save Changes: Click "Change" or "Sync now" to apply the changes.

Answer 2

Token expired message is due to incorrect system time being set. Simply fix your system time, reload the page and click 'refresh token'. Followed and can verify @jehna1 is correct.