Can't Update File-Lost Connection To It

Hi, BigBillFL.

Looks like you're right on track for the cause of the problem. Sometimes disconnecting a drive before the file is fully saved unto the external drive can cause the file to become corrupted. Your client saves her file onto the drive, I recommend copying over the file onto your computer. You can always view our article on moving QuickBooks Company files here. Let me know if there's anything I can do to help.

Thank you for your reply.

The problem isn't moving the file, it is opening the file.  My client cannot open the file on her computer and I cannot open the file on my computer.

I tried repairing the file using file doctor.  That did not work.  I tried renaming the file.  That did not work.  

Do you have any other suggestions?  

Thank you.

I can share another set of troubleshooting steps that can fix this issue, BigBillFL.

Incorrect folder permissions, firewall configuration, or internet settings in Windows may cause errors when opening company files in Windows. Before diving into the process, we'll have to make sure that your QuickBooks is updated to the latest release. Once done, we'll have to run QuickBooks as administrator:
 

1. Close QuickBooks.
2. Right-click the QuickBooks icon and choose Run As Administrator.
3. Try to open the company file again.

If the same thing happens, we can toggle the UAC setting to refresh the connection:
 

1. Close QuickBooks.
2. On your keyboard, press the Windows logo and type User Account Control.
3. Go to Settings, then choose Change User Account Control Settings.
4. Make note of the current level and then move the slider to the highest setting, Always notify.

We'll also have to ensure that the file is not set as Read Only. You can follow the steps below in checking it:
 

1. Locate the file.
2. Right-click the company (.QBW) file.
3. On the General tab, ensure that Read Only is not checked.
4. If it is checked, clear the checkbox and select OK.
5. Try opening the file again.

You can refer to this link to learn more about this process: Connection to QuickBooks company file is lost.

I also encourage performing the troubleshooting steps listed in this article, as I want to ensure that you can successfully open your company file: Error message: Connection Has Been Lost.

Should you have further questions or any other concerns about QuickBooks, you can always find me here. Stay safe and healthy.

I unchecked the read only box.  The file will still not open when I double click on it.  I received Error Code 80070057.  This should only occur in rare situations.  Such errors can sometimes be solved by...

I am thinking the file may be beyond recovery.

Thank you for your help.

@BigBillFL 

Try contact Intuit Data Service to fix it. Otherwise, consider purchasing a 3rd party file recovery service.

Good Morning, @BigBillFL. 

Welcome back to the Community. If you're receiving this error message after trying these troubleshooting steps that my colleague provided, then I recommend contacting our Customer Support Team. They have additional tools to hop on a screen share with you and to look deeper into your account to see what's the cause of this problem. 

1. Go to the Help menu in your QuickBooks. 
2. Pick QuickBooks Desktop Help. 
3. Select Contact Us at the bottom of the pop-up page. 
4. Give a brief description of the issue and click Continue. 
5. Scroll down and choose to Get a Callback or Schedule a Call. 

If you have any trouble getting in touch with our Support Team, please let me know. It's my priority that you're able to open this company file. Have a great day.