Being a user of Quickbooks, you may face the multi user set up problem i.e. quickbooks-error-h303 at any time. The main reasons behind this problem are the incorrect DNS setting, incorrect host configuration, non-disclosure of the host computer’s IP address as well as wrong configuration of fire wall.
Being one of the most common problems related to this software suit, you should not be worried while facing the same. As resolving this problem needs some professional knowledge, contacting with the quickbooks online tech support will be the wisest decision in this case. Dialing +1-877-249-9444 will let you connect with their dedicated technical support team.