CorelDraw - No fonts were found. This application may not have been properly installed.

Symptoms:

CorelDRAW crashes when launches with error message "No fonts were found"

or receiving error 5000.

Error screenshot  : 

Cause:

Corrupted Corel font database

Resolution:

Resetting the font diabase should fix the issue.

• Go to Start
• Click Run
• Type %appdata% and press Enter
• Open the Corel folder
• Right-click the FontDatabase and choose Rename
• Change the name to FontDatabase.old
• Hold down the F8 key on the keyboard.
• With the F8 key depressed, launch Corel Font Manager xxx.
• The following message will appear:
• Are you sure you want to overwrite the workspace with the factory defaults? Or choose the settings you want to restore 

Check the Application Settings box 

• Click Yes and release the F8 key.

Note: 
xxxx- refers to CDGS version
Steps above works for CDGS 2017 and the latest version.

REFERENCE :  https://kb.corel.com/en/129016