What is DLL-FAULT-ntdll.dll?
Missing or corrupt library ntdll.dll is a high-severity software runtime issue. The application could not be started because the ntdll.dll module threw an exception or was not found. It's most often caused by deleted library file, incompatible version of Visual C++ and malware Damage. Work through the steps below in order.
Common Causes
- Deleted library file
- Incompatible version of Visual C++
- Malware Damage
Step-by-Step Fix Guide
-
1
Reinstall the app
Reinstall the app tends to be the quickest win here, addressing the most typical cause of DLL-FAULT-ntdll.dll.
-
2
Install the Visual C++ Redistributable package
If the fault persists, continue with the next steps, which account for less common runtime instability causes.
-
3
Run System File Checker
If earlier steps didn't help, "Run System File Checker" directly addresses deleted library file.
Commands & Diagnostics
sfc /scannow
regsvr32 ntdll.dll
Frequently Asked Questions
Deleted library file accounts for the majority of DLL-FAULT-ntdll.dll reports; incompatible version of Visual C++ and malware Damage come up less often but are documented.
Most DLL-FAULT-ntdll.dll reports resolve after "Reinstall the app". The rest of the guide above is there for the cases that don't.
Rated high severity — DLL-FAULT-ntdll.dll isn't immediately destructive, but recurring instances are a sign to fix it sooner rather than later.
Usually. DLL-FAULT-ntdll.dll is fixable with the steps above; a full Windows reinstall is rarely necessary unless everything else has failed.
Still Need Help?
Search our full database of 535+ documented PC errors for more solutions and step-by-step repair guides.
Search Error Database