While using Windows 10, some users may encounter an error popup stating "The program can't start because api-ms-win-crt-runtime-l1-1-0.dll is missing" when launching certain applications such as Adobe software, games, AutoCAD, or Skype.
This is a common Windows component error, usually caused by a missing or improperly installed runtime library. This article will thoroughly analyze the causes of this error and provide multiple effective solutions to help you quickly fix the issue and restore your system to normal.
What Is api-ms-win-crt-runtime-l1-1-0.dll?
api-ms-win-crt-runtime-l1-1-0.dll is a core DLL file that is part of the Microsoft Visual C++ Redistributable for Visual Studio 2015. It belongs to the Universal C Runtime (CRT), which is essential for running many modern applications.
If this DLL file is missing, corrupted, or not properly registered, Windows cannot load the dependent applications and will display an error.
Common Causes of This Error
Visual C++ 2015 Redistributable is not installed
Incomplete Windows updates, especially missing Universal CRT components
The DLL file was accidentally deleted or damaged by malware
Registry issues preventing the DLL from being recognized
Solutions to Fix the Error
Method 1: Use a Professional Repair Tool
Driver Talent X not only manages drivers but also includes a feature for fixing DLL file issues. It eliminates the need for manual DLL downloads, reducing the risk of errors.
Download and install the latest version of Driver Talent X from the official website.
Launch the tool and click "Try Now" to scan your system.
Select "Full Checkup" and locate the missing DLL under "Core DLL Files Abnormal". Click "Fix".
Restart your computer to ensure the repaired DLL is loaded correctly.
Method 2: Install Visual C++ 2015 Redistributable
Go to the Microsoft official website and download the Visual C++ Redistributable for Visual Studio 2015.
Install the version that matches your system architecture (x86 or x64).
Restart your PC and relaunch the application.
Tip: If you're unsure which components your system lacks, use Driver Talent X to scan and automatically repair all missing DLLs and runtimes.
Method 3: Run System File Checker (SFC)
Press Win + S, search for "Command Prompt", right-click and select "Run as Administrator".
In the terminal, type: sfc /scannow
Press Enter and wait for the scan to complete.
Restart your PC and check if the issue is resolved.
Method 4: Repair Visual C++ Redistributable
Press Windows + R, type "control", and press Enter to open Control Panel.
Switch to Small icons view and open Programs and Features.
Locate Microsoft Visual C++ 2015 Redistributable, select it, and click "Change".
In the setup window, click "Repair".
If prompted by User Account Control (UAC), click "Yes" and follow the instructions to complete the repair.
Method 5: Check for Windows Updates
Press Win + I to open Settings.
Go to Update & Security > Windows Update.
Click "Check for updates", then "Download and install" if updates are available.
Reboot the system after updates are installed.
Method 6: Manually Register the DLL (Advanced Users Only)
If the DLL file exists but is not registered, you can manually register it:
Locate the DLL file, usually at: C:\Windows\System32\api-ms-win-crt-runtime-l1-1-0.dll
Open Command Prompt as Administrator and run: regsvr32 C:\Windows\System32\api-ms-win-crt-runtime-l1-1-0.dll
You should see a message: "DllRegisterServer in ... succeeded".
Method 7: Completely Uninstall and Reinstall Visual C++ Redistributables
Open Control Panel > Programs and Features.
Uninstall all entries labeled "Microsoft Visual C++ Redistributable".
Visit Microsoft's website and download the latest all-in-one Visual C++ Redistributable package, which includes 2015, 2017, 2019, and 2022 versions.
Install and reboot your system.
Tips to Prevent This Error from Happening Again
Keep your Windows system up to date with the latest patches
Only download software from trusted sources
Install Visual C++ redistributables before installing heavy software like Adobe or games
Use tools like Driver Talent X for regular system health checks and repairs
The "missing api-ms-win-crt-runtime-l1-1-0.dll" error is common but not difficult to fix. By installing the necessary Visual C++ libraries, updating Windows, running SFC, or using professional tools like Driver Talent X, most users can resolve the issue quickly.
If none of these methods work, it's recommended to seek technical support or consider reinstalling the operating system as a last resort.
