ccess to fetch at 'https://localhost:44362/api/abp/application-configuration?api-version=1.0' from origin 'https://localhost:44308' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-O #2919

9 Answer(s)

• 

  0

  malfaqeeh48 created 4 years ago

  help me please i need help very very fast cuse i have a deadline

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  enisn created 4 years ago

  Support Team .NET Developer

  As I see, it's a CORS issue, did you configure cors properly for you client?

  Make sure your IdentityServer configuration is made properly. https://docs.abp.io/en/abp/5.2/Modules/IdentityServer#client

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  enisn created 4 years ago

  Support Team .NET Developer

  You can configure it with UI:

  

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  malfaqeeh48 created 4 years ago

  As I see, it's a CORS issue, did you configure cors properly for you client?

  Make sure your IdentityServer configuration is made properly. https://docs.abp.io/en/abp/5.2/Modules/IdentityServer#client

  iam still on localhost server run time iis ???

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  malfaqeeh48 created 4 years ago

  You can configure it with UI:

  

  the problem is I can not to access to this page because the error change port number for from 4307 to 4308 and i got this error when I click f12 inspect console and that happened automatically this is not the first time happened

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  enisn created 4 years ago

  Support Team .NET Developer

  If you're working on localhost, please check your IdentityServerDataSeedContributor.cs class before running DbMigrator. That class is placed under IdentityServer folder under Domain project by default. All Clients are defined there and they're seeded to run your app properly at the initial state.

  Make sure the following code block exits and blazor URL is configured properly in appsettings.json of DbMigrator project.

    var blazorClientId = configurationSection["MyProjectName_Blazor:ClientId"];
          if (!blazorClientId.IsNullOrWhiteSpace())
          {
              var blazorRootUrl = configurationSection["MyProjectName_Blazor:RootUrl"].TrimEnd('/');
  
              await CreateClientAsync(
                  name: blazorClientId,
                  scopes: commonScopes,
                  grantTypes: new[] { "authorization_code" },
                  secret: configurationSection["MyProjectName_Blazor:ClientSecret"]?.Sha256(),
                  requireClientSecret: false,
                  redirectUri: $"{blazorRootUrl}/authentication/login-callback",
                  postLogoutRedirectUri: $"{blazorRootUrl}/authentication/logout-callback",
                  corsOrigins: new[] { blazorRootUrl.RemovePostFix("/") }
              );
          }
  

  After configuring everything well, run the DbMigrator once to seed client options.

  Also, please check appsettings.json file under your HttpApi.Host project. There should be a section like that:

   "App": {
      "CorsOrigins": "https://*.yourproject.com"
    },
  

  You can separate CorsOrigins with coma (,), make sure there is your blazor url.

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  0

  malfaqeeh48 created 4 years ago

  If you're working on localhost, please check your IdentityServerDataSeedContributor.cs class before running DbMigrator. That class is placed under IdentityServer folder under Domain project by default. All Clients are defined there and they're seeded to run your app properly at the initial state.

  Make sure the following code block exits and blazor URL is configured properly in appsettings.json of DbMigrator project.

    var blazorClientId = configurationSection["MyProjectName_Blazor:ClientId"]; 
          if (!blazorClientId.IsNullOrWhiteSpace()) 
          { 
              var blazorRootUrl = configurationSection["MyProjectName_Blazor:RootUrl"].TrimEnd('/'); 
   
              await CreateClientAsync( 
                  name: blazorClientId, 
                  scopes: commonScopes, 
                  grantTypes: new[] { "authorization_code" }, 
                  secret: configurationSection["MyProjectName_Blazor:ClientSecret"]?.Sha256(), 
                  requireClientSecret: false, 
                  redirectUri: $"{blazorRootUrl}/authentication/login-callback", 
                  postLogoutRedirectUri: $"{blazorRootUrl}/authentication/logout-callback", 
                  corsOrigins: new[] { blazorRootUrl.RemovePostFix("/") } 
              ); 
          } 
  

  After configuring everything well, run the DbMigrator once to seed client options.

  Also, please check appsettings.json file under your HttpApi.Host project. There should be a section like that:

   "App": { 
      "CorsOrigins": "https://*.yourproject.com" 
    }, 
  

  You can separate CorsOrigins with coma (,), make sure there is your blazor url.

  yes I checked them all everything is good and that's code already build by abp suite and I didn't change anything's in these files

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  malfaqeeh48 created 4 years ago

  i don't know why that's problem happened with me I didn't make any change except the the db but I made update db on the cli and i made run for dbmigrator this is the last time happened before multiple days so help please to solve this situation

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  gterdem created 4 years ago

  Senior .NET Developer

  Open the appsettings.json of your project running at 'https://localhost:44362'. Go to the CORS section and add localhost:44308.

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