Api-ms-win-core-windowserrorreporting-l1-1-1.dll

The file is a part of the Windows API Sets, specifically handling Windows Error Reporting (WER) functions . It is a virtual DLL (an "api-set") that redirects to the actual underlying system library, typically wer.dll . Full Feature Overview

Sometimes the issue isn't Windows—it's the app itself. If the error only happens with one specific game or software (like Word 365), a clean reinstall can re-register the necessary DLLs in the application's local directory. A Word of Warning: Avoid "DLL Download" Sites Api-ms-win-core-windowserrorreporting-l1-1-1.dll