If you have a 4K screen monitor/laptop and you are using Remote Desktop Connection (RDC), most probably the remote screen resolution is too high and the items/text awfully small.
First, I tried to install Remote Desktop Manager, and having checked the option RDCMan.exe -> Properties -> Compatibility -> “Override high DPI scalling behaviour” but didn’t worked.
After that, I’ve made the following changes:
Go to Remote Desktop Connection (mstsc.exe). Click on “Show Option” -> Display and set a custom resolution eg. 1280×768. Now connect to the remote computer.
After you are connected to the remote computer, click on the top icon of the remote desktop connection app and select a zoom like 200% – 250%.
I hope that this info will be useful!