How to fix FATAL: Unable to retrieve tier version info error in cPanel

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FATAL: Unable to retrieve tier version info error

This error means that there is some issue with the cPanel installation is communicating with the master server, and install or upgrade cPanel.

To fix, you need to

1. 1. Login to server as SSH
2. 2. /scripts/upcp –force

If the issue happens again, you need to login to WHM -> Tweak settings -> Security

 

And turn this setting to off

 

Then you need to run /scripts/upcp –force again