Answered
NEED HELP!!! My Adobe Acrobat Reader DC does not allow me to save any PDF file
Could anyone help with this.... I have the free Adobe Acrobat Reader DC version
Could anyone help with this.... I have the free Adobe Acrobat Reader DC version
I think this might be the same as the "white screen" problem. There is an option "Show online storage when saving files". If this option is turned OFF it can help. I show a screen shot of the English version to help locate this preference. (Start with Edit > Preferences or Ctrl+K).

Turn option OFF.
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