Configuration System Failed to Initialize

Question

I m new to Visual Studio  I m currently creating a Login form   I have this code   string connectionString   ConfigurationManager ConnectionStrings  ConnectionString   ConnectionString  try       using  OdbcConnection connect   new OdbcConnection connectionString                 connect Open            OdbcCommand cmd   new OdbcCommand  SELECT username  password FROM receptionist   connect           OdbcDataReader reader   cmd ExecuteReader             if  username login Text    username  amp  amp  password login Text    password                        this Hide                MessageBox Show  Invalid User    Login Error   MessageBoxButtons OK  MessageBoxIcon Error               this Close                      else              MessageBox Show  Invalid User    Login Error   MessageBoxButtons OK  MessageBoxIcon Error           connect Close            catch  OdbcException ex        MessageBox Show ex Message   error   MessageBoxButtons OK  MessageBoxIcon Error       But whenever I try to type in the username and password there is an error called Configuration system failed to initialize  I m just wondering what kind of problem is this and how could I solve this   Please help

User · Answer

If you are dealing with an Azure WebJob - I had to remove the following after upgrading to the latest 4.6.1.

  <compilation debug="true" targetFramework="4.6.1">
    <assemblies>
      <add assembly="System.Runtime, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
    </assemblies>
  </compilation>

Hope this helps.

User · Answer

I tried all of the solutions above trying to figure out why one of my unit tests were failing to pick up the configuration from an app config file that is perfect   I had 2 references to the same assembly like so       Removing the  duplicate  reference in yellow fixed it for me   I hope this works for someone else  it drove me nuts for a while

User · Answer

After a long search I realised  this exception has an inner exception that tells you exactly what is wrong with your config file

User · Answer

Sometimes the Error occurs because a windows create a duplicate in the      C  Users App Data Local  You App Name       Just delete this folder and done  try it

User · Answer

In my case  within my  edmx file I had run the  Update Model From Database  command  This command added an unnecessary connection string to my app config file  I deleted that connection string and all was good again

User · Answer

In My case  I have two configsections in the app config file  After deleting the one hiding in the code lines  the app works fine    So for someone has the same issue  check if you have duplicate configsections first

User · Answer

Make sure that your config file  web config if web  or app config if windows  in your project starts as    lt  xml version  1 0   gt   lt configuration gt       lt configSections gt           lt sectionGroup name  applicationSettings                         type  System Configuration ApplicationSettingsGroup  System  Version 4 0 0 0  Culture neutral  PublicKeyToken b77a5c561934e089   gt                lt section name  YourProjectName Properties Settings                        type  System Configuration ClientSettingsSection  System  Version 4 0 0 0  Culture neutral  PublicKeyToken b77a5c561934e089                        requirePermission  false    gt            lt  sectionGroup gt       lt  configSections gt   lt  configuration gt    Note that inside the configuration element  the first child must be the configSections element   In the name property on section element  make sure you replace YourProjectName with your actual project s name   It happened to me that I created a webservice in a class library project  then I copied  overwriting  the config file  in order to bring the endpoints configuration  to my windows app and I started to have the same problem  I had inadvertently removed configSections   it worked for me  hope it helps

User · Answer

This is kinda dumb  but for me I fixed it by doing a get latest from source control on my code  I think there was some new configuration element that was added by someone else  and I needed to overwrite my configuration files  OP shows the error I had gotten  which wasn t really pointing me in the right direction

User · Answer

As  Flash Gordon mentioned in his comment  you will need to define any custom tag  as a section  in your App config file  under  lt configSections gt   For example  you re working on a test automation project with SpecFlow  amp  adding  lt specFlow gt  tag  then a simplest version of App config will look like this

User · Answer

Delete old configuration files from c  Users username AppData Local appname and c  Users username AppData Roaming appname and then try to restart your application

User · Answer

I restarted Visual studio and even the whole PC  I cleaned the project  rebuild  and deleted bin file   Nothing helped until i changed the configuration from x64 to x86  It worked on x86 but when i changed it back it also worked

User · Answer

lt  xml version  1 0  encoding  utf-8    gt   lt configuration gt     lt appSettings gt       lt add key  xyz  value  123    gt         lt  appSettings gt   lt  configuration gt

User · Answer

If you have a custom section  you need to mention that under configSections right below configurations tag   Please check your transform files  make sure you remove the unnecessary tags only the section that are going to vary needs to be there in transform files  dont mention config section in the transform files if not needed  this would also cause the problem   if you have any syntax error in machine config  then also this error is expected

User · Answer

Easy solution for  Net Core WinForms   WPF    Net Standard Class Library projects  step 1  Install System Configuration ConfigurationManager by Nuget Manager  step 2  Add a new App Config file   lt  xml version  1 0  encoding  utf-8    gt   lt configuration gt     lt appSettings gt       lt add key  Bodrum  value  Yalikavak    gt         lt  appSettings gt   lt  configuration gt    step3  Get the value  string value   ConfigurationManager AppSettings Get  Bodrum       value is Yalikavak   If you are calling it from a Class Library then add the App Config file on your Main Project

User · Answer

I know this has already been answered but I had exactly the same problem in my unit tests  I was tearing my hair out - adding an appSettings section  and then declaring the configuration section as per the answer  Finally found out that I had already declared an appSettings section further up my config file  Both sections pointed to my external settings file  appSettings config  but the first appSettings element using the attribute file whilst the other used the attribute configSource  I know the question was about the connectionStrings  Sure enough  this happens if the appSettings element is the connectionStrings element being duplicated with different attributes   Hopefully  this can provide someone else with the solution before they go down the path I did which leads to wasting an hour or two  sigh oh the life of us developers  We waste more hours some days debugging than we spend developing

User · Answer

Try to save the  config file as utf-8 if you have some  special  characters in there  That was the issue in my case of a console application

User · Answer

It is worth noting that if you add things like connection strings into the app config  that if you add items outside of the defined config sections  that it will not immediately complain  but when you try and access it  that you may then get the above errors   Collapse all major sections and make sure there are no items outside the defined ones   Obvious  when you have actually spotted it

User · Answer

Same problem with me I solved my problem by removing verion  v3 5  from  App config   Before    lt  xml version  1 0  encoding  utf-8   gt     lt configuration gt      lt startup gt     lt supportedRuntime version  v4 0  sku   NETFramework Version v4 5 2   gt    lt  startup gt    lt supportedRuntime version  v3 5    gt   Remove this  lt  configuration gt    Solution   lt  xml version  1 0  encoding  utf-8   gt   lt configuration gt      lt startup gt        lt supportedRuntime version  v4 0  sku   NETFramework Version v4 5 2   gt     lt  startup gt     lt  configuration gt    Here is how to use version on   MSDN Support Runtime Element

User · Answer

I solved the problem by using the below code      lt  xml version  1 0  encoding  utf-8    gt   lt configuration gt     lt configSections gt       lt sectionGroup name  applicationSettings                    type  System Configuration ApplicationSettingsGroup  System  Version 4 0 0 0  Culture neutral  PublicKeyToken b77a5c561934e089   gt          lt section name  YourProjectName Properties Settings                 type  System Configuration ClientSettingsSection  System  Version 4 0 0 0  Culture neutral  PublicKeyToken b77a5c561934e089                 requirePermission  false    gt        lt  sectionGroup gt      lt  configSections gt     lt appSettings gt       lt add key  SPUserName  value  TestUser    gt       lt add key  SPPassword  value  UserPWD    gt     lt  appSettings gt   lt  configuration gt

User · Answer

I had this same problem with an MSTest class  Marlon Grech in his article says  the  element has to be defined as the first element in the App config    So make sure that  is the first element in under the  element  I had put AppSettings first

User · Answer

Wow it took me forever to figure out this one  For some reason changing the attribute  assembly  AssemblyCompany  CompanyName    at AssemblyInfo cs made this error disappear  I was referencing a project that had a different value for the attribute  assembly  AssemblyCompany  CompanyName     I maked sure both projects had the same attribute value and it worked great

User · Answer

In my case the only solution was to add the reference to the System Configuration in my Test project as well

User · Answer

If you have User scoped settings you may also have a user config file somewhere in the  Userfolder  AppData Local  ProjectName  folder    If you later remove the User scoped settings the user config will not automatically be removed  and it s presence may cause the same error message  Deleting the folder did the trick for me

User · Answer

If you ve added your own custom configuration sections to your App Config  make sure you have defined the section in the  lt configSections gt  element   I added the my config XML but forgot to declare the configuration section up top - which caused the exception  Configuration system failed to initialize  for me

User · Answer

I started to get this problem after uninstalling Oracle Client Drivers and it removed my C  WINDOWS Microsoft NET Framework v2 0 50727 machine config   Copying it from another computer resolved the problem

User · Answer

I too faced the same problem  But accidentally i written the  without writting the  the previous one should go inside this tags  thus the  Configuration System Failed to Initialize  error was arising  Hope it will help

User · Answer

I just had this and it was because I had a  lt configuration gt  element nested inside of a  lt configuration gt  element

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