I had a strange error today. The right hand quarter of my screen would not respond to clicking or scrolling. It was so strange.

I thought it must be to do with drivers or something like that. I did some googling and found that it could be to do with certain apps that are running in the background.

So I started to kill apps using Task Manager to see which app it might be.

I found the problem was being caused by Slack

To solve the problem I just had to find slack in Details tab of Task Manager, right click on one of the processes and choose 'End process tree'

enter image description here

After all of the slack processes were killed I was able to click and scroll in the whole area of my screen again.

If it doesn't work for you with Slack, try killing some other apps. Some people were blaming Origin (the games app) as well.

Paul Seal

Umbraco MVP and .NET Web Developer from Derby (UK) who specialises in building Content Management System (CMS) websites using MVC with Umbraco as a framework. Paul is passionate about web development and programming as a whole. Apart from when he's with his wife and son, if he's not writing code, he's thinking about it or listening to a podcast about it.

Proudly sponsored by


  • Moriyama build, support and deploy Umbraco, Azure and ASP.NET websites and applications.

  • CI/CD service for Windows, Linux and macOS
  • Build, test, deploy your apps faster, on any platform.

  • elmah.io is the easy error logging and uptime monitoring service for .NET.
  • Take back control of your errors with support for all .NET web and logging frameworks.
uSync Complete

  • uSync.Complete gives you all the uSync packages, allowing you to completely control how your Umbraco settings, content and media is stored, transferred and managed across all your Umbraco Installations.

  • More than a theme for Umbraco CMS, take full control of your content and design with a feature-rich, award-nominated & content editor focused website platform.

  • Affordable, Geo-Redundant, Umbraco hosting which gives back to the community by sponsoring an Umbraco Open Source Developer with each hosting package sold.