Answers.Body: <p>I had this problem with windows 10.  Installing the latest silverlight from here: <a href="https://www.microsoft.com/getsilverlight/Get-Started/Install/Default.aspx" rel="nofollow">https://www.microsoft.com/getsilverlight/Get-Started/Install/Default.aspx</a> did the trick</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-02-19T05:33:44.370Z
Answers.Text: This also works for fixing Mac OSX
Answers.UserDisplayName: James A Mohler
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-12-30T13:30:52.167Z
Answers.LastActivityDate: 2015-12-30T13:30:52.167Z
Answers.UserDisplayName: LazyDave76
Answers.Body: <p>I just had this same error happen now (but was having no problems a few months ago). So I searched for the latest version of Silverlight I could find and found version 5.1.50907.0 at download.cnet.com and installed and now EV3 is working.</p>
  <p>Here's the link: <a href="https://download.cnet.com/microsoft-silverlight-64-bit/3000-2378_4-75884713.html?ex=WLS-1348.3" rel="nofollow noreferrer">https://download.cnet.com/microsoft-silverlight-64-bit/3000-2378_4-75884713.html?ex=WLS-1348.3</a></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2024-07-25T04:13:34.790Z
Answers.LastActivityDate: 2024-07-25T04:14:56.437Z
Answers.LastEditDate: 2024-07-25T04:14:56.437Z
Answers.UserDisplayName: Jonagezz
Answers.Body: <p>You will need Exit the application then remove the folder
  C:\Users\LegoLeague\AppData\Local\LEGO\MINDSTORMS EV3
  Then restart the EV3 Mindstorm application</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2022-02-05T16:10:22.190Z
Answers.LastActivityDate: 2022-02-05T16:10:22.190Z
Answers.UserDisplayName: Waffle
Answers.Body: <p>If the program opens but loading appears the whole time, just open a new program and save it... and open it again, it will work. </p>
  
  <p>This is a glitch. </p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-08-10T15:13:11.780Z
Answers.LastActivityDate: 2017-08-10T19:41:37.423Z
Answers.LastEditDate: 2017-08-10T19:41:37.423Z
Answers.UserDisplayName: DEVA
Answers.Body: <p>Try this guide I found in the LEGO Education Website:  <a href="https://education.lego.com/en-us/support/mindstorms-ev3/software-launch-issues" rel="nofollow">https://education.lego.com/en-us/support/mindstorms-ev3/software-launch-issues</a></p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-01-06T11:47:57.090Z
Answers.LastActivityDate: 2016-02-04T10:39:06.247Z
Answers.LastEditDate: 2016-02-04T10:39:06.247Z
Answers.UserDisplayName: Alberto Santos
Body: <p>I Installed Mindstorms EV3 application on MS Windows 7 Home Premium v6.1 (Build 7601: Service Pack 1) and I keep getting the same error message when launching.</p>
  <p>A white window pops up with the following:</p>
  <p>LEGO MINDSTORMS EV3 has detected a problem during the application launch. Press OK to close the application and get more information about fixing the problem.</p>
  <p>There is only a single &quot;OK&quot; button to press and it then launches the web browser to a Lego page link that cannot be found.</p>
  <p>I have checked with Lego tech support and they suggested the issue was with MS Silverlight which I uninstalled and reinstalled along with the EV3 application... all to no avail.</p>
  <p>Any ideas?</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-10-14T03:46:30.103Z
Comments.Text: To my surprise, re-installing Silverlight did resolve the issue for me on .Windows 10)
Comments.UserDisplayName: user9322
Tags: <ev3><mindstorms>
Title: Mindstorms EV3 PC application won't load
UserDisplayName: patter88
ThreadText: # Mindstorms EV3 PC application won't load
  
  (Asked by: username_0 on 2015-01-06)
  
  I Installed Mindstorms EV3 application on MS Windows 7 Home Premium v6.1 (Build 7601: Service Pack 1) and I keep getting the same error message when launching.
  
  A white window pops up with the following:
  
  LEGO MINDSTORMS EV3 has detected a problem during the application launch. Press OK to close the application and get more information about fixing the problem.
  
  There is only a single "OK" button to press and it then launches the web browser to a Lego page link that cannot be found.
  
  I have checked with Lego tech support and they suggested the issue was with MS Silverlight which I uninstalled and reinstalled along with the EV3 application... all to no avail.
  
  Any ideas?
  
  **Tags:** ev3, mindstorms
  
  > **Comments:**
  > **username_1**: To my surprise, re-installing Silverlight did resolve the issue for me on .Windows 10)  
  
  ---
  
  ## 5 answers
  
  ### Answer by username_2 on 2015-12-30. Score: 3
  
  I had this problem with windows 10. Installing the latest silverlight from here: <https://www.microsoft.com/getsilverlight/Get-Started/Install/Default.aspx> did the trick
  
  > **Comments:**
  > **username_3**: This also works for fixing Mac OSX  
  
  ---
  
  ### Answer by username_4 on 2024-07-25. Score: 1
  
  I just had this same error happen now (but was having no problems a few months ago). So I searched for the latest version of Silverlight I could find and found version 5.1.50907.0 at download.cnet.com and installed and now EV3 is working.
  
  Here's the link: <https://download.cnet.com/microsoft-silverlight-64-bit/3000-2378_4-75884713.html?ex=WLS-1348.3>
  
  
  ---
  
  ### Answer by username_5 on 2022-02-05. Score: 0
  
  You will need Exit the application then remove the folder
  C:\Users\LegoLeague\AppData\Local\LEGO\MINDSTORMS EV3
  Then restart the EV3 Mindstorm application
  
  
  ---
  
  ### Answer by username_6 on 2017-08-10. Score: 0
  
  If the program opens but loading appears the whole time, just open a new program and save it... and open it again, it will work.
  
  This is a glitch.
  
  
  ---
  
  ### Answer by username_7 on 2015-01-06. Score: 0
  
  Try this guide I found in the LEGO Education Website: <https://education.lego.com/en-us/support/mindstorms-ev3/software-launch-issues>
  
  
  ---
  
  