Do you have a computer with High-DPI screen? A very high resolution display? And is everything too small to see within your Remote Desktop Connection, try this solution…
This issue is caused by lack of not being DPI scaling aware of the Remote Desktop Client. If you open a Remote Desktop connection to a server or other computer the native resolution of the computer is used instead of the scaling to 1920×1080, so you’ll get very small icons etc.
First tell Windows to look for a manifest file for an application by default. This can be done by setting a registry entry.
Open regedit and navigate to the registry key:
Right-click, select NEW -> DWORD (32 bit) Value
Type PreferExternalManifest and then press ENTER.
Right-click PreferExternalManifest, and then click Modify.
Enter Value Data 1 and select Decimal.
Click OK. Exit Registry Editor.
Next step is to make a manifest file, , you can download it here. Important is that you save the file in the same directory as the Remote Desktop Client executable (mstsc.exe).
Now try and connect with Remote Desktop again.