So after a new update on my Computer at Work, I did once more download the installation. After compiling with context-mswin I got this file

Command Line:   context.exe --synctex=-1 "context-test.tex"
Startup Folder: C:\Users\Hermann\Downloads\context-mswin\tex\texmf-context\tex\context\test\mkiv

startup error : no format file given, quitting

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ConTeXt Compilation Report (Pages: 0)

Errors: 0   Warnings: 0   Bad Boxes: 0

Did I something wrong?

Uschi