Adobe reader for mac doesn't open downloaded PDF's
Adobe reader for mac doesn't open downloaded PDF's. I have downloaded the latest version of Acrobat reader for use on my iMac using the latest mac OS 10.13.3. High Sierra.
Bizarrely some older downloaded pdf's can be opened, some can't. By older I mean from a few weeks to a few months and beyond.
There is something very wrong and very ugly about this software. It just doesn't work.
Why is it doing this and what is the solution.
Do any other Mac users know what is going on with this ?
