New Install of Coldfusion 2016 Startup Issue XPathFactory

Artiem, when you say the log all says successful, let's be more specific (for your sake, and Adobe's, and those of us following along).

To be clear, you are referring to the installation log that's in the root of the CF2016 folder, right?

And when you say it all says "successful", can you be more specific. Do you see a line (near the top of the file, about 100 lines down), looking like this:

Summary

-------

Installation: Successful.

9111 Successes

0 Warnings

0 NonFatalErrors

0 FatalErrors

Your number of successes may vary, but you could have 9110 in my case, and 1 error, and that could keep some things from working. 

Finally, you mention having tried to run an update, and that failed. Was that in the UI, or were you looking at a log about the update, in the cfusion/hf-updates folder? There would normally be a folder there for each update one tried to install (6, in your case), and a log file in that for each time you tried to add or remove an update. Did you get such a log? (It's possible there may be no folder there for your update 6, if the update never really started.)

If there is a log there, note that it TOO has that table of successes and errors, and you'd want to see that it was all successes. I discuss this more in a blog post on the topic:

How to solve common problems with applying ColdFusion updates (in 10 and above)

Finally, either way, do you see any folder for any other updates (5 or earlier)? I know you said you just installed it and tried this one update. I'm just wanting to be 100% clear that there is no other update.  The reason I ask is that if somehow some previous update WAS done (by you or anyone involved in the CF instance), perhaps a failure in THAT update has left things in the state that you can't do the NEXT update. Just something to consider.

Hope something there is helpful.