Cannot connect using TeamViewer ID from Windows 10 PCs

Since yesterday, we've found that we're unable to connect to remote computers via their TeamViewer ID from Windows 10 PCs.  We tried from a Windows 7 PC and we can connect just fine, so we know there's nothing wrong at the remote end, our firewall or the Internet connection.

The logfile shows this on the technician's PC:

2017/11/08 08:22:28.661  3756  4828 S0!! HandshakeClient::Connect: [remote ID: 123456789, connection ID: 1, remote connection ID: 0] invalid private key

Anyone else experiencing this issue?

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