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.

Labels:

Comments

Post a Comment

Popular posts from this blog

All the require docs of job seekers (java docs, testing docs, study materials, genuine consultancy link)

# JUST_FOR  JAVA LOVERS : CORE & ADVANCED JAVA Notes ! Core Java and Advanced Java Notes! . Link 1 :-  https://www.dropbox.com/s/t…/1--%20Core%20Java%28TOC%29.pdf… Link 2 :-  https://www.dropbox.com/s/0ahi8r…/9--%20Advanced%20Java.pdf… _________________________________ 1.  https://drive.google.com/…/0BxJrew1xg5ZLZjdabnVUUkswalk/view 2. https://drive.google.com/…/0BxJrew1xg5ZLVHVSQ0tiU1VmVXM/view 3. https://drive.google.com/…/0BxJrew1xg5ZLdS1JUTAxMWtTcEU/view 4. https://drive.google.com/…/0BxJrew1xg5ZLY1M5bGp2Ym5lZUk/view 5. https://drive.google.com/…/0BxJrew1xg5ZLck13Rndpd1ZlcEU/view 6.  https://drive.google.com/…/0BxJrew1xg5ZLb2xodlhOTEVzLTA/view --------------------- Spring --------------------- https://drive.google.com/…/0BxJrew1xg5ZLQ3VaQnlja3N1Mkk/view https://drive.google.com/…/0BxJrew1xg5ZLTXNVLUdOR0xmTzQ/view https://drive.google.com/…/0BxJrew1xg5ZLWU9PUmVKUUYtMjQ/view ---------------------- Hibernate ---------------------...
Post a Comment
Read more

Use your mobile phone as web cam to your pc/laptop

 Brief  This thing started when I had an interview😮 with one of the company in Nepal and my laptop camera quality was so bad that I was asked to turn off 😥 it which made me to think to buy a webcam for my laptop and I realized if the webcam be attached to my laptop using USB cable or WIFI then why we cannot use my phone. This is how it started. I have tested it and using this app called iVCam since then it worked very well as well with teams, zoom and other streaming app as well. We need to download these 2 stuffs only: The mobile app. The PC client software. Install these two software on your individual mobile and pc and then you are good to go.Mobile phone will ask for the permissions, and allow all the permission it ask for. There are two by which we can connect your mobile phone as web cam and they are:  A) WIFI: Connect your laptop and mobile to the same wifi network. Open app in both mobile and laptop/pc. It will automatically connect to the mobile camera....
Post a Comment
Read more

Interview Experience - Senior Software Engineer (.NET)

 Brief I had a chance to be interviewed by one of the IT company in Kathmandu, Nepal. And, the best part of the interview which I have never seen till the date in Nepal in any company's interview so far are: The feedback of the interview: The interviewer gave feedback based on what they expected from the candidate. The feedback was related to the latest technologies like, .NET Core, ReactJS, Azure, RPC, REST API, Containers like Docker and the code deployment . Since, they are using the latest technologies and they needed a candidate who has exposure on these technologies so that they can easily provide support to the client. The salary negotiation:  The best part here was they did not ask for my current salary . They did ask about my salary expectation and how much at max they can offer . Since, the offered salary was way lower than my expectation. I declined the offer. Overall, the interview experience was great since it was straight and to the point interview. Below are ...
Post a Comment
Read more