Paste the file into the C:\Windows\System32\ folder of the broken computer.
Wait for the scan to complete. If it fixes issues, restart your PC. 2. Install/Repair the Universal C Runtime in Windows
Locate a secondary computer running the exact same version and build of Windows. Navigate to C:\Windows\System32\ on the healthy machine. Search for Api-ms-win-core-version-l1-1-1.dll . Copy the file to a USB drive. Api-ms-win-core-version-l1-1-1.dll 64 Bit
| Method | Description | Complexity | | :--- | :--- | :--- | | 1. Verify File Presence | Check in System32\downlevel and SysWOW64\downlevel . | Very Low | | 2. Install Windows Updates | Install all available system updates. | Low | | 3. Install/Repair VC++ Redist | Download and repair the x64 VC++ Redistributable. | Medium | | 4. Run System File Checker | Use sfc /scannow to repair system files. | Medium | | 5. Update/Repair Software | Use the program's built-in repair or reinstall it. | Low | | 6. Perform Office Rollback | Revert Office to a stable build via command line. | Medium | | 7. Register DLL with Regsvr32 | Manually register the DLL in the system registry. | Medium | | 8. Reinstall Application | Uninstall and then reinstall the problem application. | Low |
Windows has a built-in tool that can detect and replace missing system files. Open the Start menu and type . Paste the file into the C:\Windows\System32\ folder of
Right-click the and select Command Prompt (Admin) or Terminal (Admin) . Type sfc /scannow and press Enter . Wait for the validation check to reach 100%. If errors are fixed, restart your system. 4. Run the Deployment Image Servicing tool (DISM)
If you need help deploying these fixes, tell me you are currently running and the name of the application that is throwing the error. Share public link Search for Api-ms-win-core-version-l1-1-1
This specific API set is natively bundled with newer versions of Windows. If you are running an outdated version of Windows 7, 8, or an unpatched version of Windows 10/11, the file may simply not exist in your directory.
If the error only happens when launching a specific program (e.g., a game, Adobe software), the program itself might have a corrupted dependency. Uninstall the application. Restart your PC.