Hi I have just upgraded to Parallels 16.1.1 from V15, did the tools updates etc. Now every time I start/resume my Snow Leopard Server VM, a window appears as below - "Parallels Tools update is not required". Under Version 15 I did not have the problem and I don't get it with Sierra, High Sierra or Windows 10 VM's. I tried re-installing Parallels tools but it made no difference. Any suggestions on how to get rid of it? Thanks.