Program won't refresh screen unless I right click on the task bar

Hi all,


I'm running a small, industry specific program in Windows. It runs fine on a LOT of Windows 10 installs, but on the occasional Windows 10 machines I have the following happen.


- The program loads like normal.
- The user is prompted to enter a PIN to enter the software.
- The software just sits there, showing no input even though the user has entered their PIN.
- If I right click on the taskbar, all of a sudden the PIN shows as entered.
- The user then presses the login button and again, nothing happens.
- If I right click on the taskbar, again, the software refreshes and the next screen is shown.


This goes on and on. The app will only refresh when the task bar has been right clicked.


Now interestingly out of the say 10 or so Windows 10 machines that we've had issues with, some of them can be fixed by running a Windows Update. Others can be fixed by running in compatibility mode. Some of them though, simply won't fix their behaviour.


Has anyone come across this kind of activity before where the screen of a program won't refresh until you right click the task bar? It's got us stumped. We can't find any error messages anywhere.


Thanks so much for your time.


Rob

My suggestion is to do a Repair Install.
Repair Install Windows 10 with an In-place Upgrade

It allows you to keep your files, settings and apps.