QuickBooks is a versatile accounting software that is widely used by small and medium-sized businesses to manage their finances. One of the key features of QuickBooks is that it allows users to access company files in multi-user mode, which allows multiple users working on various workstations within the network to access the same company file simultaneously and make changes to it. However, this can sometimes lead to network issues, such as slow performance or difficulty accessing the company file. One of the network issues can often result in QuickBooks error 6190, along with error 6190,-77 If you are experiencing error code 6190,-77 or other network issues when using QuickBooks in multi-user mode, the first thing you should do is check the configuration of your server and that the server computer is set up correctly. In many cases, QB error 6190 can be resolved by ensuring that the server is configured with the appropriate settings and has the necessary permissions to share the file in a multi-user access mode. In this troubleshooting guide, we will discuss how to fix network issues that give rise to error 6190 when using QuickBooks.