QuickBooks error 80070057 usually occurs when you try to open a company file. This error message indicates that QuickBooks is unable to read the company file because of a few reasons, such as:

• Incorrect network setup
• Firewall blocking QuickBooks
• Incorrect file extension
• Damaged company file
• Multiple instances of QuickBooks running on the same computer

Here are some steps you can take to fix QuickBooks error 80070057:

1. Check if the company file has the correct file extension (.qbw). If it does not, rename the file extension to .qbw and try opening it again.

2. Make sure that you are not opening the company file over a network. Instead, copy the file to your local computer and try opening it.

3. If you are using a third-party firewall, make sure that QuickBooks has access to the internet. You may need to add QuickBooks to the list of exceptions in your firewall settings.

4. Run QuickBooks as an administrator. Right-click on the QuickBooks icon and select "Run as administrator."

5. Disable hosting on all workstations. Open QuickBooks and go to File > Utilities > Stop Hosting Multi-User Access.

6. Repair the QuickBooks installation. Go to Control Panel > Programs and Features, select QuickBooks, and click on Repair.

7. If the company file is damaged, you can try to restore a backup of the file or use the QuickBooks File Doctor tool to repair the file.

      Regards:

      LATESTGBAPPS