|Reinstalling user interface languages
If you are unable to select the required user interface language in the menu, reinstall further UI languages.
This is done by inserting the WinCC flexible CD1 and starting setup.
Select the "Change program" option and click "Next".
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Click "Next" to skip the next dialog to access the reinstallation of the product languages.
Then select the languages which you require and click "Next" to confirm. The selected languages are now installed.
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Click "Finish" to close the InstallShield Wizard.