What is Quo warranto and When does the court issue this writ?

• The words quo warranto means “what is your authority”?. A writ of Quo Warranto is issued against the holder of a public office to show to the court under what authority he holds the office. 
• If the court finds that a person is holding an office for which he/she is not entitled or to a person who is performing a function for which he/she is not lawfully entitled, the court may stop that person from holding that office and exercising that function.

Further Reading:

• Types of Writs – What are Writs?
• Fundamental rights