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where is the tools screen?

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i need to change the settings to allow me to open xfa-based pdf forms.

i need to change the settings to allow me to open xfa-based pdf forms.

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Can turn the Firefox Menu on by musing to top of Browser and Right Click and tick Menu Bar or far right 3 Bar Menu then Options. https://www.howtogeek.com/333110/how-to-customize-firefox-quantum-and-remove-the-white-space-around-the-title-bar/

Please let us know if this solved your issue or if need further assistance.

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Firefox 52+, except for the Extended Support Release, does not run the Adobe Acrobat plugin. The built-in PDF viewer probably does not support PDF forms (either correctly or at all).

Therefore, I suggest opening any such forms externally in the stand-alone Adobe Reader/Acrobat application. Is that possible? If it won't work outside of the browser, then you can use Internet Explorer.