Hello there, guhy. Thank you for adding a screenshot.
I appreciate you for giving your time and effort to perform and try some troubleshooting steps in order to get this resolve.
I can see the importance of accessing your company file (QuickBooks Desktop 2018) right now. Based on the screenshot you've added above, it says "Administrator Permissions Needed". This means that you'll have to log in to both Windows and QuickBooks Desktop as an admin.
Once done, we can review your hosting settings and make sure to set them up correctly. This will help you fix the error 6175,0. Here's how:
- Open QuickBooks on any workstations where you see H101, H303, or H505.
- Go to the File menu.
- Select Utilities.
- If you see the Host Multi-User Access option, don’t select it. Move on to the next workstation. This one isn’t causing the problem.
- If Stop Hosting Multi-User Access is an option, select it.
Once done, go to this article and proceed to Step 2: Check your server settings section. It will guide you through the process.
Also, I'm adding a few details about the QuickBooks Desktop service discontinuation policy and upgrade information. You'll not be able to subscribe to live technical support or any of the other Intuit services that can be integrated with QuickBooks Desktop after May 31, 2021. This includes all versions of QuickBooks Desktop Pro, Premier, and Enterprise Solutions v18. I would suggest checking this link for more insights: What does service discontinuation mean?
If you need some references in the future, you can also check the system requirements for QuickBooks Desktop 2018.
Let me know if you have additional concerns. I'll help you right away. Stay safe and be well!
