Windows 7 Enterprise - IE 11 (Version 11.0.9600.19236)
VS 2012 - .NET Framework 3.5
Telerik UI For ASP.NET AJAX 2016.2.607.305
We've been using the RadRadialGauge control in our intranet web application for years since around 2016 with no issues. Just recently (not sure exactly when) our users started noticing that the control was no longer displaying, just completely blank (see attachment 3-RadRadialGauge_Missing.jpg). After some analyzing & testing I've determined it doesn't seem to be a licensing or server-side issue.
To come to this conclusion I decided to try the RadLabel control which is just textual & has no graphic rendering like RadRadialGauge (see attachment 1-RadLabel.jpg). It appears fine since it's only displaying text.
Next I tried RadDatePicker which has a combination of text & graphic rendering (see attachment 2-RadDatePicker.jpg). It resulted in sort of a hybrid display where the date input box is there, but instead of showing the calendar icon it just has the mouse hover text.
It should be noted throughout this process I also tried downloading the latest version of these controls (2019.1.115.35) but still experienced the same behavior. I'm theorizing these problems are due to a Windows or more likely IE update which we might have recently received. All software updates like this are managed at the Enterprise level & pushed to all users in our company. I've tried searching the forums & I see here & there somewhat similar rendering issues posted, but nothing so far which has resolved my particular issue.
Any help would be greatly appreciated!