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Danger level 3
Type: Potentially Unwanted Application


CornerSunshine is another application that enables users to track the weather in their local area. It allows users to check the temperature outside, shows the chance of rain in percentage, and displays the humidity index. In other words, it looks and acts like any other weather notification app, so users do not even suspect that it might be unreliable. We do not say that CornerSunshine is a very harmful piece of software either; however, it has become clear to us after several tests that this application should be placed under the category of potentially unwanted programs because it is not perfect. We will share the results of our research with you. If it happens that you decide to get rid of this application after you find out how it really acts, you should use our manual removal guide because it is not that easy to erase it fully even though it has an uninstaller in Control Panel.

We want that it will become clear for you why you need to remove CornerSunshine in the first place. Once you know what to expect from this application, you could easily decide yourself what to do. First of all, specialists cannot consider this weather app fully trustworthy because it seems to be developed by software developers who have created such applications as FVP Image Viewer, OZIP, and Uncheckit, which are all known to be able to download malware on the user’s computer without permission. Yes, researchers suspect that CornerSunshine might be programmed to act like that as well. Nobody says that it will definitely download malicious software on your computer; however, you should still remove it if you do not want to risk allowing malware, e.g. adware, browser hijackers (especially those that belong to the Elex family), etc. to sneak onto your computer.

Free applications are often placed into the category of potentially unwanted programs even though they are quite beneficial and look harmless. It is because they tend to sneak onto computers in software bundles. Users are usually informed that additional software is going to be installed, but we still consider this “bundling” method unfair. We believe that you cannot remember downloading this piece of software willingly too because its official website cornersunshine.com is down, or it has not been launched yet. As in the case of other applications, it has, most probably, entered your computer in a software bundle. It has been found that users who download software from P2P websites and torrents allow undesirable software to enter their computers more frequently. If you cannot stop visiting these websites, at least, install security software on your computer to prevent undesirable software from entering your PC. You should install new software very attentively as well.

You will not only see a button that opens a small window with the information about the weather in the corner of your Desktop after the installation of CornerSunshine. It might be hard to notice the changes but this piece of software also makes many modifications the second it infiltrates the computer. Research conducted by specialists at pcthreat.com has shown that this application will create the folder in %PROGRAMFILES% (%PROGRAMFILES(x86)%). Also, you will find several new registry keys if you check the system registry, for instance, HKEY_CURRENT_USER\Software\Corner Sunshine, HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Clients\Corner Sunshine, and HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\CornerSunshineSvc. Last but not least, it will add several of its files to the %APPDATA% directory. Unfortunately, they will stay even though you delete this potentially unwanted program from the system. Yes, it leaves its components on board, which is another reason why our specialists classify it as a PUP.

You can remove CornerSunshine through Control Panel; however, you will need to erase all the components it leaves on the system too. Please use the manual removal guide you can find below this article. If you do not have time for this, you can remove those leftovers automatically. There are so many unreliable tools available for download these days, so we suggest using SpyHunter – we are sure that it will not disappoint you. You can get its free version from our website. Scroll down and click on the Download button you find below the article.

How to remove CornerSunshine manually

Windows XP

  1. Click the Start button.
  2. Select Control Panel.
  3. Click Add or Remove Programs.
  4. Select the unwanted program and click Remove.

Windows 7/Vista

  1. Click on the button in the lower-left corner.
  2. Select Control Panel from the menu and then open Uninstall a program.
  3. Right-click on CornerSunshine.
  4. Uninstall it.

Windows 8/8.1/10

  1. Launch RUN (Win+R).
  2. Type Control Panel in the box and click OK.
  3. Click Uninstall a program.
  4. Select the unwanted program.
  5. Click Uninstall.

Delete leftovers

  1. Tap Win+E.
  2. Remove app_00000000 from %PROGRAMFILES% and %PROGRAMFILES(x86)%.
  3. Go to %APPDATA% and delete the Corner Sunshine folder.
  4. Tap Win+R.
  5. Enter regedit.exe and click OK.
  6. Delete the following registry keys one after the other (right-click on the registry key and select Delete):
  • HKEY_CURRENT_USER\Software\Corner Sunshine
  • HKEY_LOCAL_MACHINE\SOFTWARE\Clients\Corner Sunshine
  • HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Clients\Corner Sunshine\
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\CornerSunshineSvc
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\services\CornerSunshineSvc
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\CornerSunshineSvc
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