Visual Studio 2015 seems to forget several things:
1. The Toolbox is empty each time I open a project; if I reset the Toolbox, exit and reopen the project, it is OK, but next time - same problem.
2. The Start Page does not remember the Last Used project or solution, and Open/Project or solution does not remember the starting folder.
3. Does not recognize tag prefix "asp". Seriously?
I have run the setup with Repair option, reset all preferences to default. All OK for a little while, then same problems return.
Help is most appreciated.