User directory: ~\AppData\Roaming\LyX2.3\ > > Did you check permissions on this directory? > Permissions were same on the directory.
> Is it the same user directory whether you run it in administrator mode or > not? > Another trick question? On windows my understanding is ~ is current user which would remain same user in this case bdavis as Windows does not switch to Administrator, but only elevates the privileges of current user to Administrator. The permissions on the directory do no change as it is the same directory and permissions do not change on a directory just by becoming Adminstrator... err well provided the software is actually using that directory.... is it? On Linux I would assume ~ would switch to root. > Was MikTeX installed for one user or for all users? > I always install for all users. > Same question for LyX. A mismatch between those could cause a problem. > Again same. I always install for all users. Strangely on Win 10 Pro box this morning LyX no longer requires me to run in Administrator mode to have article.cls show up as available. Something is changing out from under the hood on Windows/LyX/MikTeX combo to the point it could mess with a persons sanity. A Dell update may have been applied. This is one of the most bizarre user experiences I have had. It's like owning one of those cars where the insulation of the wires are made from soybeans and squirrels get all up in under the hood to create havoc chewing on the wires or like the cars with CAN network issues requiring the use of the left turn signal to roll down the right rear passenger window. Win 10 Enterprise box this morning still requires admin mode to generate pdf. So at least there is stable insanity there.