Introduction

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The article describes the bug by start the why custo diagnostic Client from the client wont start on a Windows 7 PC without any Windows Updates.

Problem

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by Start While you start custo diagnostic , he comes the dialogueclient this dialogue is showing and custo diagnostic client wont start:



The "api-ms-win-crt-runtime-I1-1-0.dll is missing

Solution

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You have to

Install the follow Windows package: https://www.microsoft.com/de-de/download/details.aspx?id=48145

or:

you install the Windows update KB2999226.