Good day, @pete131. I understand the convenience of using the QuickBooks Online Desktop app to access your company files. Allow me to share the steps with you on how to download the app seamlessly.

When downloading the QuickBooks Online desktop app, you'll need a Windows 64-bit computer and need to be a QuickBooks Online subscriber or an accountant with a QuickBooks Online Accountant.

Note: If you’re switching from QuickBooks Desktop to QuickBooks Online, you can select Download the app after you upload your data. Skip to step 3 below.

To download the data, follow the steps below:

1. Sign in to your QuickBooks Online account. 
2. Go to the Gear icon ⚙. Then select Get the Desktop app.
3. Depending on your settings, you might see the app install automatically. If not, QuickBooks will prompt you to save the .exe file. Click this link QuickBooks Online desktop app.
   •  If asked, choose where you want to save the file and select Save. Open the QuickBooks Setup file to install.
4. A shortcut to the app gets installed on your desktop. After you install the app, it should open automatically. If it doesn’t, open the app from the shortcut. 
5. On the sign-in screen, enter your user ID and password. Then select Sign in. 
6. If you see more than one QuickBooks Online company, select the company you want to open. Note: If there isn't a QuickBooks Online company linked to your user ID, an error message will display.
7. The first time you use the desktop app, you’ll see an option to select how QuickBooks is displayed on the main homepage, (you can change this later).

• If you switch from QuickBooks Desktop and want a similar view, select Yes, let’s go. 
• If you’re already familiar with QuickBooks Online, select No, I already know how to use QuickBooks Online. Then select your company, and you're all set.
  

For more details about downloading and installing the QuickBooks Online desktop app, see this link: Download and use the QuickBooks Online desktop app. It also contains information on how you can access multiple companies in QBO.

You can also browse our QuickBooks Help page for helpful video tutorials and handy articles that you can use as guides in performing QuickBooks tasks. 

I'm just around to help you in case you have any other queries about downloading QuickBooks programs. I'll keep an eye out for your reply. Take care always and have a good one.