System.Configuration.ConfigurationErrorsException:

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System.Configuration.ConfigurationErrorsException: An error occurred creating the configuration section handler for userSettings/Microsoft.SqlServer.Configuration.LandingPage.Properties.Settings: Could not load file or assembly 'System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies. Sistem belirtilen dosyayı bulamıyor. (C:\Users\Administrator\AppData\Local\Microsoft_Corporation\LandingPage.exe_StrongName_ryspccglaxmt4nhllj5z3thycltsvyyx\11.0.0.0\user.config line 5) ---> System.IO.FileNotFoundException: Could not load file or assembly 'System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies. Sistem belirtilen dosyayı bulamıyor.

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And this happens when you do what?

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hi

please google search ,, with the error ..

Lots of articles , Videos will come
They will talk about different kind of solutions

You will have to find the one that works for you !!!

For Example ..

Please Google Serach