Ensure your is not blocking or deleting vital files like Transmgr.900 , which can cause internal errors.
This error typically appears during startup, after a system crash, following a Windows update, or when switching users on a shared computer. For an accountant or business owner, seeing this message can trigger panic— Will I lose my company data? Will my customized reports vanish?
An ounce of prevention is worth a pound of cure. Follow these best practices to never see this error again.
| Prevention | Action | |------------|--------| | | F12 → Configuration → Export Settings → Save to safe location | | Graceful shutdown | Always exit Tally using Esc → Quit, never force-close | | Backup automation | Use Tally’s auto-backup feature ( F12 → Configure → Auto Backup) | | Avoid disk cleaners | Do not let CCleaner or temp cleaners delete Tally’s config files | | Windows updates | Keep Windows updated to avoid file permission bugs |
: If the application settings file is permanently corrupted, you may need to run the TallyPrime Setup and select the Repair option to restore default system files without affecting your business data.
: Files like tally.cfgts , which store your specific preferences, may become unreadable due to abrupt system shutdowns.