I have InDesign as part of CC package on two machines. On one all works fine, but on other the I cannot Save As or Export the indd file to IDML since the Save As or Export dialog screen does not offer such option (what does on other machine). Any ideas how to fix it on second machine?
It sounds like you might have corrupted preferences on that other machine. Try resetting them on that machine. This will tell you how: https://helpx.adobe.com/indesign/using/setting-preferences.html#restore_all_preferences_an d_default_settings