A quick solution for QuickBooks Company File Is Lost
                     Fixing Connection to the QuickBooks Company 
File is Lost
To ensure speed and efficiency in fulfilling different projects, the QuickBooks company 
file is saved on a server computer and accessed through numerous workstations 
connected to the network. However, occasionally, different error messages, such as a 
connection to the QuickBooks company file is lost, can cause access to the QB 
business file on the server to be blocked.
This tiresome error message pops up when the user can't access the company file on 
the server. It indicates there are network issues preventing access to the company file 
from other computers. You'll find here detailed fixes to fully remove this really 
bothersome error message linked with the company file. 
If you need a QuickBooks expert or team to help you resolve this error, 
we're here to assist. Give us a call at a toll-free number 1.855.856.0042, 
and our QuickBooks Enterprise support team will be ready to help.

Reasons Behind the QuickBooks 
Company File Issues
Users might encounter issues when working with company files for the following 
reasons:
• The company files are located on a different system or a portable drive 
• Firewall settings block the connection to the storage device where company files 
are stored.
• Power management settings on the server are causing interruptions, leading to 
the QuickBooks connection has been lost windows 10 error.
Methods to Resolve the QuickBooks Company File Issues
To resolve this issue, follow the steps in the specified order.
Methods 1: Reconnecting to QuickBooks 
Company File
• Check the physical connection of the storage device to ensure it is properly 
connected.
• Restart the computer and the storage device to reset the connection.
• If using a portable drive, try connecting it to a different USB port.
• Ensure that the storage device is powered on and functioning correctly.
• If the issue persists, consider transferring the company files to a more stable 
storage solution.
Methods  2: Disable the firewall
To disable the firewall, take the actions listed below:
• To access the Start Menu, use the window button.
• Access the Firewall's settings.
• In the Firewall settings, choose Advanced Settings.
• To edit the Inbound Rule, right-click on it under Advanced Settings.
• Visit the New Rule.
• Choose the TCP option.
• Choose the particular local port in the port.
Methods 3: Turn off the server's power 
management settings
Consider disabling the Power Management Settings on the server.
To do this, follow these steps:
• On the machine where the corporate file is kept, navigate to the Windows Control 
Panel and select the Power Management Settings.
• Hit the Windows key.
• In the search results, type Power Options and choose it.
• Turn off the host computer's sleep, standby, or hibernation modes.
In this post, we've aimed to address all aspects of the QuickBooks connection to the 
QuickBooks company file is lost error. Implementing any of the methods we've 
discussed above can greatly help resolve this frustrating error. However, if any 
information was missed or if any of your questions remain unanswered, feel free to 
contact our accounting professionals through our 1.855.856.0042. Our QuickBooks 
error support team is available 24/7 to answer all your queries.