I have just moved my Windows 10 PVM to a new late 2015 IMac. It has been working fine on a 2009 iMac with Parallels 10. On installation, I found that I was unable to install Parallels Tools so, with a sense of frustration, I installed Parallels 11 trial, and then the tools. Everything, with one exception, is working as it should. The exception is that when I attempt to tie the '@' sign in Windows 10 I get ' " '. I may be having another senior moment but I cannot work out what is going on. The language etc are all correct and the keyboard works as it should in MacOSX El Capitan.
You just need to remove Parallels Desktop 11 first, refer to this article. Then download and install Parallels Desktop 10, refer to this article.
Thanks again. I was worried if I did this then I would get the same result as before; i.e., a failed Parallel Tools install. I am pleased to say that after a couple of attempts, the Tools re-installed properly in Parallels 10 and everything seems to be working as it should.
