If QuickBooks crashes when opening a company file, try these steps:

Update QuickBooks: Ensure you have the latest version.
Rename the .ND and .TLG files: These files help QuickBooks connect to your company file. Renaming them forces QuickBooks to recreate them.
Open a Sample File: This checks if the issue is with your company file.
Use QuickBooks File Doctor: This tool can fix common file corruption issues.
For expert help, call 1.855.738.2891 for immediate assistance.