Error 80070057 is quite a common problem that users come across in QuickBooks while opening a company file. QuickBooks error 80070057 indicates that users don’t have enough permissions to open a company file due to which they cannot read/write and create/delete the files. To resolve error 80070057 the users have to perform the following actions. Step 1. Firstly, there is a need to verify the company file name extension. Right-click on the company file, click properties, and then change the extension to .QBM. Step 2. The next step could be to perform a clean installation of QuickBooks desktop or move the company file to a default location. Step 3. If these manual ways couldn’t resolve the problem then you may try to run the QuickBooks file doctor tool.