Can't Open OrCad PCB Editor

Go to a Windows File Explorer window and in the address bar type %HOME% followed by a return. This opens your HOME folder (usually C:\SPB_data). In here is a pcbenv folder, try renaming this to pcbenv_old then restart PCB Editor and try again,

Steve, I appreciate the help. I started working with EMA-EDA support yesterday afternoon on the issue. For posterity, I've tried the following.

Please try starting the PCB Editor from the Windows Start menu using the following command.

 C:\Cadence\SPB_17.4\tools\bin\allegro -safe

 If that makes no difference, try starting the editor with this command

 C:\Cadence\SPB_17.4\tools\bin\allegro -noopengl

Neither of those commands worked. 

This issue started after a Windows system update, so something must have been changed or corrupted in that process.

I am now re-installing the application. 

Even after a full re-install, I still received the error message.

The culprit was an NVIDIA driver update. Disabling the video card fixed the issue. After some trial and error, I was able to roll back the driver to a workable version.

Final update on this issue in case others stumble upon this thread.

I updated the more powerful NVIDIA graphics card driver to the latest and disabled the discrete Intel graphics driver so that the computer was forced to use one graphics card. Apparently, OrCAD has issues when there are more than one graphics card on the system. It's all good now.