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Hello thanks for your help.

That didn't work for me. The strange thing is, sometimes the bibliography works for me and I see all sources after compiling. But after changing something in my document or adding new sources in jabref it doesnt't work anymore.

After Compiling 04_SPS.tex I get this Error
Process started

bibtex: Sicherheitsrisiko: wird mit erweiterten Privilegien ausgeführt

This is BibTeX, Version 0.99d (MiKTeX 23.5) The top-level auxiliary file: 04_SPS.aux I found no \bibdata command---while reading file 04_SPS.aux I found no \bibstyle ...

Hello everyone.

I'm new here. I have the following main page "00_Abschlussarbeit.tex".

%Dokumentklasse
\documentclass[a4paper,12pt]{scrreprt}
\usepackage{geometry}
%\usepackage[onehalfspacing]{setspace}
% ============= Packages =============

% Dokumentinformationen
\usepackage[
pdftitle={Titel ...