Skip to main content

ASP.NET Hosting Common Errors

 

Troubleshooting common hosting issues

In this section, we will look into some of the common problems that you can face while hosting a Blazor application.
  • If you are unable to open the website and get a DNS not found error
Check if the hostname is configured correctly in the host file. Make sure that your machine is not connected to any VPN server. Also, if you are using any Web proxy then disable it.
  • HTTP Error 500.19 – Internal Server Error - The requested page cannot be accessed because the related configuration data for the page is invalid.
This error message is clear. The publish folder is inaccessible because of insufficient permissions. Grant Read permission to the IIS_IUSRS group on the publish folder so that it can access Web.config file.
  • If the website is loading but data is not getting populated and you get a 500 Internal server error
Make sure that your connection string is in the correct format. The user id that you have specified in your connection string should have db_datareader and db_datawriter permissions. If the issue persists then provide the user with db_owner permission
  • If the data is not getting populated and you get an “operation not allowed” exception
This issue generally appears when you try to do a PUT, POST or DELETE operation in your web API. To mitigate this issue we need to alter the IIS setup configuration.

Navigate to Control Panel >> Programs and Features >> Turn Windows feature on or off. Then navigate to Internet Information Services >> World Wide Web Services >> Common HTTP Features and uncheck the “WebDAV Publishing” option and click ok. Refer to the image below,


  • “Failed to load <web API> : No 'Access-Control-Allow-Origin' header is present on the requested resource.
The cause of this error is that the client and the server of the application are not on the same port. The browser will restrict the application to make web API calls due to same-origin policy. To resolve this issue you need to enable Cross-Origin Requests (CORS) in your application.
Please refer to Microsoft documents on Enable Cross-Origin Requests (CORS) in ASP.NET Core  .
  • If you republish the application then do not forget to refresh your website as well as the application pool in IIS.

Comments

Popular posts from this blog

npm install on windows 7 python2 not found error and node-sass@3.13.1 error #317

Before I write all, I'd like to say that before the update everything worked well; while updating node from version 7.2.1 to version 9.4.0 and npm from version 5.5.1 to version 5.6.0 in Windows 7 (64-bit) using the installer (https://nodejs.org/en/download/) and installing globally gulp-cli version 2.0.0, as far as npm install starts from the JointsWP folder I get the following error: $ npm install npm WARN deprecated babel-preset-es2015@6.24.1: รฐ  Thanks for using Babel: we recommend using babel-preset-env now: please read babeljs.io/env to update! npm WARN deprecated gulp-util@3.0.8: gulp-util is deprecated - replace it, following the guidelines at https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5 npm WARN deprecated minimatch@2.0.10: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue > uws@0.14.5 install C:\Users\Bob\Dropbox\Development\vhosts\mongoose-project\vanilla\themes\JointsWP\node_modules\uws > node-gyp rebuild > build_log.txt 2>...

Buying my buddy - Laptop

 Brief  I am planning to buy a new laptop and I am putting everything here which I come across while looking for best laptop which fits my requirements. My Requirements  Programming: .NET, Angular, SQL, Visual Studio, SQL Server Video Editing Country where I live is Nepal Able to use at least for 5 years Considering the above requirements, I will going with the Dell laptop though in Nepal Acer is quite famous and I will highlight why choose Dell over other laptop.  Before Buying, let's understand the terminology RAM SSD Nits Cooling Graphics Thunderbolt USB WIFI Screen SRGB Laptop meeting my requirements Below configuration will do my job smoothly for at least 5 years and they are: 16GB RAM DDR5 SSD Laptops Meeting My Requirments are: https://www.flipkart.Lenovo IdeaPad Pro 5com/lenovo-ideapad-pro-5-intel-core-ultra-9-185h-32-gb-1-tb-ssd-windows-11-home-14imh9-thin-light-laptop/p/itm1f4865cbfe7ea?pid=COMGZN7RRHARKTDE&lid=LSTCOMGZN7RRHARKTDE4G0GAP&marketplace=...

Steps using Github with Git Bash and Git Tortoise

Brief We will learn below things: Download tortoise git from the URL ( https://tortoisegit.org/ ) Download git from the URL ( https://git-scm.com/downloads ) Integrate local git with the remote GitHub . Initialize git in the local folder using git tortoise . Push and Pull the code from the master branch. Create different branches and check out between those branches from the local. Setup After downloading the git and git tortoise, install those files and you will be shown the below window when you right click inside any Folder in the windows. Initialize Git from the Git Tortoise Click on the "Git Create Repository Here" as shown in the first context menu and Press "Ok". You will see '.git' folder added as below. Right click inside the project Folder and hover on "TortoiseGit". The snapshot will be shown. Setting Up the Remote Repository into the local Click on the "Settings" as shown in the ...