This error occurs when the company file being restored is not recognized as a QuickBooks file. The article describes how to resolve this issue.
Troubleshoot and resolve error -6177, 0, This issue has been resolved in the latest QuickBooks release. Either follow the provided link to download the latest release, or use the manual troubleshooting steps to fix the problem.
Troubleshoot and resolve this Windows XP error (shows three different possible message variants), Article describes how to check the Windows compatibility mode for the QuickBooks desktop icon and QuickBooks executable file, and how to verify that the company file isn't damaged.
A notification link is provided to alert you when a resolution becomes available.