Learn how to fix QuickBooks multi user mode not working Issue
                     Why is My QuickBooks 
multi user mode not 
working after Windows 
updates?
If QuickBooks multi user mode not working after Windows updates, check your network 
setup, ensure the QuickBooks Database Server Manager is running, and verify folder 
permissions. Ensure all users have the same version of QuickBooks. Restart the server and 
workstations if needed. To resolve this issue, consider the following steps:
• Check Network Setup: Verify that your network setup allows proper communication 
between computers. Ensure all computers are connected to the same network and can 
access shared folders.
• Ensure QuickBooks Database Server Manager is Running: Confirm that the 
QuickBooks Database Server Manager is running on the server. This tool helps manage 
multi-user access to company files.
• Verify Folder Permissions: Check that the folder containing your QuickBooks 
company file has appropriate read/write permissions for all users. Incorrect permissions can 
prevent multi-user access.

• Ensure Same Version of QuickBooks: Make sure all users are running the same 
version and release of QuickBooks. Different versions can lead to compatibility issues.
• Restart Server and Workstations: Sometimes, simply restarting the server and 
workstations can resolve connectivity and configuration issues that arose from the updates.
• Configure Firewall Settings: Ensure that your firewall settings allow QuickBooks to 
access the network. Windows updates may change firewall settings, blocking QuickBooks 
from communicating across the network.
• Update Network Drivers: Check for and install updates for your network drivers. 
Outdated or incompatible drivers can cause connectivity issues after a Windows update.
• Reconfigure QuickBooks Hosting Settings: Verify that the QuickBooks hosting 
settings are correctly configured on the server and workstations. Only the server should 
have multi-user hosting enabled, while workstations should have it disabled.
By following these steps, you should be able to troubleshoot and fix the issues preventing 
QuickBooks multi-user mode from working after Windows updates.