title: notepad++ unable to install or update plugins with the new plugin admin
body: <p>I installed notepad++ recently which came with the new plugin admin. After that I am unable to install new or update existing plugins.   </p>
  
  <p>Any idea what the issue could be? I tried "Run as administrator"and also pasting the dll directly to <code>C:\ProgramData\Notepad++\plugins</code> but nothing works.   </p>
  
  <p>Here are the app details.<br>
  Notepad++ v7.6.1   (64-bit)<br>
  Build time : Dec 12 2018 - 01:22:05<br>
  Path : C:\Program Files\Notepad++\notepad++.exe<br>
  Admin mode : ON<br>
  Local Conf mode : OFF<br>
  OS : Windows 10 (64-bit)<br>
  Plugins : DSpellCheck.dll mimeTools.dll NppConverter.dll   </p>