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how do I re-instate API-MS-WIN-CORE-WINRT-l1-1-0.dll

Andrew Leite 50 Reputation points
2026-02-23T19:13:09.51+00:00

when I try to download PDF using Adobe I get an answer. The program can't start because api-ms-win-core-winrt-l1-1-0.dll missing from your computer try reinstalling the program to fix the problem

Windows for home | Previous Windows versions | Recovery and backup
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  1. AI answer

    2026-02-23T19:13:22.16+00:00

    To resolve the issue with the missing api-ms-win-core-winrt-l1-1-0.dll file, you can try the following steps:

    1. Reinstall the Application: As suggested in the error message, reinstalling Adobe or the specific application that is giving you the error may restore the missing DLL file.
    2. Update Windows: Ensure that your Windows operating system is fully updated. Sometimes, missing DLL files can be restored through system updates.
    3. Repair Windows System Files: You can use the System File Checker tool to repair missing or corrupted system files:
      • Open Command Prompt as an administrator.
      • Type sfc /scannow and press Enter. This will scan and repair any corrupted files, including DLLs.
    4. Install Visual C++ Redistributables: Since api-ms-win-core-winrt-l1-1-0.dll is part of the Windows API, ensuring that you have the latest Microsoft Visual C++ Redistributable installed can help resolve issues related to missing DLLs.
    5. Check for Malware: Sometimes malware can cause DLL files to be deleted or corrupted. Run a full system scan using your antivirus software to ensure your system is clean.

    If these steps do not resolve the issue, you may need to consider restoring your system to a previous state where the DLL was present or performing a clean installation of Windows as a last resort.

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    3 people found this answer helpful.
  2. Lucus-V 7,815 Reputation points Microsoft External Staff Moderator
    2026-03-04T20:58:01.43+00:00

    Hi Andrew Leite,
    Welcome to Microsoft Q&A forum. I'm happy to help.

    Please share me this information so I can better understand your situation:

    • What Windows version are you using?
    • What Adobe application and version are you using?

    In the meantime, you might check Q&A Assist suggestion to see if it can solve the problem.

    Thank you for your time.

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