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電腦以前安裝過的，后來重裝系統就沒了。再裝時出現這個界面：In order to install STEP7_Micro/WIN V4.0 SP6 ,you must first uninstall STEP7_Micro/WIN V4.0 from Add/remove programs.
After completing the uninstallation,restart thie setup,this setup will now exit

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請做參考！