
Damage in any of these files can trigger issues accessing the company file in QuickBooks and thus renaming these files force QuickBooks to create new ones that are free from any corruption and damage. TLG are the network data and transaction log files in QuickBooks respectively that helps QuickBooks connect and open the company file. Steps to Fix Issue when QuickBooks keeps Opening in Single-user Mode Solution 1: Renaming the *.TLG and the *.ND Files The DNS settings are either corrupt or incorrect.Incorrect hosting settings of the QuickBooks Desktop application on the server that is hosting the company file.

Windows file permissions are not properly set which leads to issues like user unable to run QuickBooks in multi user mode.The QuickBooks Database Server Manager is unable to access your QuickBooks company file.
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As the name suggests, multiple users can work on the same company file together without any confusion. QuickBooks Multi-user mode is a feature inbuilt into QuickBooks and has aided a lot of businesses on working with the application.
