Master Guide to Troubleshooting QuickBooks Error 6175, 0 When the program is unable to access a company file that is stored on a server, QuickBooks Error 6175, 0 occurs, frequently interfering with the ability to use multi-user mode. Usually, an inactive QuickBooks Database Server Manager, incorrectly configured hosting settings, server problems, or restricted firewall settings are the causes of this error. The first step in troubleshooting is to identify and fix any file-related issues using the QuickBooks File Doctor. Scan the company file folder, make sure the QuickBooks Database Server Manager is operating, and turn on hosting only on the server. To regain connectivity, restart crucial QuickBooks services like QuickBooks DBXX and QB CF Monitor Service. To enable QuickBooks to run freely over the network, change the firewall or antivirus settings. Additionally, after confirming file access, you can return to multi-user mode after briefly switching to single-user mode. For More Info : https://a2autocare.com/article/fix-quickbooks-error-6175/