This has been posted before years ago, and not a single answer. Certainly this can't be that uncommon of a problem? AnyConnect worked fine for me up until a day ago when I got a blue screen due to a flash drive driver failure. Once I got the system back up AnyConnect would crash everytime I opened it. I completely removed the software from my system, including everything from registry and now receive the above error when attempting to re-install. This software is my one means of connecting to our work environment, without it I'm like a fish out of water unable to work.