Here are the causes of QuickBooks Error H101: •	Your Personal computer is unable to connect with Server. •	Right allocation of a file is not accessible from the server. •	The error H101 can also occur if QuickBooks firewall settings block access to company files. •	When your incoming and outgoing communication gets blocked. •	Damaged or incorrect files configuration. If the given solutions for QuickBooks Error H101 doesn’t work, then you can dial QuickBooks Customer Service +1-877-693-1117.