This might belong in a development forum.
We have an internal application that uses the RDP ActiveX control library, specifically AxMsRdpClient7.
This application works on 47 out of 50 PCs, and until recently it was working on those. I suspect a Windows Update as the problem. That possibility is being looked at now. While that is being investigated, I'm curious as to if anybody else has run into this. Windows defender and the firewall are disabled. Aside from MS updates, nothing has been applied. The control continues to function on all other PCs, although the state of Windows Updates has yet to be fully documented.
All affected PCs are Windows 7, 64 bit.
The control is created without issue. When the connect method is called, the OnDisconnected event is immediately raised. The discReason is 1, the extended error information is "an internal error has occurred". All subsequent attempts to reconnect result in the same behavior, regardless of if the control is recreated or not.
I'm going to compare the registries, the MSTSC library and the Windows Update status when time permits.
Has anybody run into anything similar to this?