Disadvantages of Peer-to-peer Networks

A peer-to-peer network imposes certain limitations on the users. Some of the disadvantages are as follows.
The lack of a central administrator leads to difficulty in locating errors. To detect any error, you might need to check various machines on the network.
In a peer-to-peer network, each user must have a password. To access the resources of a user, you must know the password of that user. This requires users to remember multiple passwords.
A peer-to-peer network is non-scalable. It cannot accommodate large number of computers.