Parallels Tools installation hangs or fails at 10-15%.
Parallels Tools are needed to be installed with administrator's privileges.
- Launch Windows virtual machine.
- While virtual machine is in focus press CMD+R.
- In the pop-up box type %temp% and hit Return\Enter.
- Open PrlToolsPackages folder > Right-click on PTAgent.exe > Run as administrator.
- Wait till Parallels Tools installation will be finished.