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I reinstalled again Miktex, maybe corrupted files was installed.

Hello all,

Here is my problem with TeXstudio:

Make sure that you have installed a (La)TeX distribution e.g. MiKTeX or TeX Live, and have set the correct paths to this distribution on the command configuration page.
A (La)TeX editor like TeXstudio cannot work without the (La)TeX commands provided ...