Thanks for joining us here, @Jake54.

I'm here to help you open your company file.

To start, let's figure out if your company file or QuickBooks program itself is causing the error.

Here's how:

1. Press and hold the Ctrl key while double-clicking your QuickBooks icon. Note that the No Company Open window needs to pop-up before releasing the Ctrl button.
2. If it fails to open, you’ll need to check QuickBooks Desktop does not start for steps in resolving.

If the program starts, you’ll need to verify if only one computer is using your company file. To turn off hosting in other computers, here’s how:

1. From the menu bar, click on File, and select Utilities.
2. Select Stop hosting multi-user access.

If you’re still unable to open your company file, let’s perform this other troubleshooting steps.

1. On the menu bar, click on File, and select Open or restore company.
2. Select the appropriate button for the file type you want to open.
3. Locate the company file.
4. Click on Open to view the company file.

You may read this article for more information: Resolve Problems Opening QuickBooks Desktop or your Company File.

Keep me posted on how it goes by dropping a comment below. Have a great day!