Unable to view "Tools>Protect" to allow me to add a password to a pdf file. No "Protect" option when I open the PDF file. Can anyone assist?

[Guest]

When I open the PDF file, there is not ability to get to "Tools" on one system but when I go to another system I can see it.  But in neither case can I see the "Protect" option to password protectr the file.  Probably very simple but I can't make it happen.  Easy answer for someone but not me.  Please assist.

[Test Screen Name]

For each of the two systems please let us know the software you are actually running. Please go to Help > About and tell us if you have Acrobat Pro, Acrobat Standard, Acrobat Reader or Adobe Reader - or something else. Also the exact version shown in the About box, like 11.0.34 or 2015.1243.90022

[taiho]

I have Acrobat Reader DC.

[try67]

You need Adobe Acrobat (​not Adobe Acrobat Reader) to be able to do that.