I still have this problem after using all the solutions given on the forum.
And it only runs 15 browsers.
Can't go any further than that and it gets the message across.
While I have used browser hiding capability which can run 1000 browsers simultaneously.
there is no more issues with the previous 2 dlls for some reason...
If anyone has the same issue, i found a solution!
I do not know why or how, but compiling the projects after the new installation/upgrade works for me.