Showing results for 
Search instead for 
Did you mean: 
Level 1

QB 2020 for Mac Losing connection to shared Company file

Quickbooks 2020 for Mac: Version R9
macOS: Cataline 15.5.5
Error Message (from Quickbooks 2020 SERVER):
QuickBooks lost connection to the company file.
To reconnect to the files, click OK. Then look for the company file under Shared Files. If you don't see it, contact your administrator.
Suddenly my employees are not able to open the shared company file. We are on the same local network. There has not been any updates to the program or the file. It just suddenly started to prevent the shared file from being opened.
I am still able to open the Company file locally and make changes, save, close, reopen, etc...
Troubleshooting I have tried (but failed) and received the same exact error message:

Restoring a Company Back up from Quickbooks back up
Restoring the previous version of Quickbooks and the Company file from as far back as 6 months ago.
Uninstalling Quickbooks, perform a clean install.
Installing Quickbooks 2020 on a different MAC with company file.
Modem and router Resets
Mac System Preferences:
Reset Network settings
WIFI and Ethernet
Placed company file in new SHARED Folder
Renamed File and Location
Checked file and folder permissions
Renamed computer name for network.
I can't find an answer to this issue anywhere. I have been troubleshooting for 4 days. I could use any ounce of guidance.
1 Comment 1
QuickBooks Team

QB 2020 for Mac Losing connection to shared Company file

Hi there, mhemple.


Thank you for visiting the QuickBooks Community. I appreciate you for performing some troubleshooting steps to fix the issue. This isn't the kind of service we want you to experience while using QuickBooks Desktop for Mac 2020. With this, I'll be sharing details about this matter.


The issue about lost connection error when sharing file in QB Mac 2020 was reported recently as an ongoing issue. Our product engineers are now working to fix this as soon as possible. 


For now, the single-user mode is all that can be used as a workaround.


I suggest contacting our QuickBooks Support Team, so they can add you to our notification list. This will help our engineers determine the number of affected users. You'll also receive an update through email once this has been resolved. 


I also recommend visiting our QuickBooks Help page, so you can browse articles or questions from other users that were answered by QB experts. This will help you earn more knowledge that can help you with your accounting tasks.


Don't hesitate to post again or leave a comment below if you have any other concerns about getting an error while sharing the file in QB Mac. I'm more than willing to help. Have a wonderful day!

Need to get in touch?

Contact us
Sign in for the best experience
Ask questions, get answers, and join our large community of QuickBooks users.
Sign In / Sign Up