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I will fix asp dotnet core, c sharp, web API and iis errors
Prignesh M
About this gig
Is your .NET app throwing errors, crashing, or returning 500s? Ill find the root cause and fix it properly, not just patch the symptom.
I am a Senior .NET Developer with 8+ years building enterprise ASP.NET applications as a developer and project manager.
What I fix:
- C# runtime exceptions and build errors
- ASP.NET Core / MVC routing, middleware, DI and startup errors
- Web API issues: 400/401/500, CORS, JSON serialization
- Entity Framework Core, LINQ and SQL Server problems
- JWT, Identity and app settings configuration
- IIS hosting errors: 500.30, 502.5, 403, startup failures
- Docker and Azure App Service deployment issues
- .NET 6/8/9/10 and legacy .NET Framework 4.x, MVC 5, Web API 2
What you get:
- A working, tested fix
- A plain-English explanation of the root cause
- Clean code, no hacks
- Updates while I work
Before ordering, message me with:
- The full error message or stack trace
- Screenshots or logs
- Your .NET version and hosting (IIS, Azure, Docker)
I will confirm I can fix it and recommend the right package. Please don't place order prior discussion.
Get to know Prignesh M
Prignesh M
Turning Ideas into Secure, Scalable DotNet Web and Mobile Apps
- FromIndia
- Member sinceNov 2025
- Avg. response time3 hours
Languages
Gujarati, Hindi, English
Need one developer for your whole app, front end to back end?
I’m Prignesh, a Senior Full Stack .NET Engineer with 8+ years building enterprise software for a US compliance firm, as developer and project manager.
✅ Full stack web apps: ASP.NET Core + Angular
✅ REST APIs, SQL Server, Docker & Azure (AKS)
✅ UI/UX design: clean, responsive interfaces
✅ .NET MAUI & WPF apps, designed and built end to end
✅ Bug fixes, performance & IIS/hosting issues
🤖 AI-assisted development = faster delivery, lower cost.
Daily updates, clear scope upfront.
💬 Message me your project details!
My Portfolio
Other Software Development Services I Offer
FAQ
Q1. What information do you need to fix my .NET application bug?
Please share the issue description, error message or screenshots, relevant source code, .NET version, and expected result. This helps me understand the problem and confirm the scope.
Q2. Do you test the code after fixing the bug?
I test the affected functionality where feasible to verify the agreed fix. Testing scope depends on the issue and available project setup.
Q3. Can you handle complex bugs or multiple issues?
Yes. Please contact me before ordering with your requirements so I can review the scope and recommend the appropriate package, price, and delivery time.
Q4. What if my issue is not covered by your packages?
No problem! Click “Contact Me” and explain your issue. I'll review your requirements and discuss a custom offer if the project is a good fit.
Q5. Do you work with old .NET Framework apps?
Yes. I fix bugs in .NET Framework 4.x, MVC 5 and Web API 2 apps as well as modern .NET 6–9 projects.
Q6. Can you fix errors that happen only on the server or in IIS?
Yes. I troubleshoot IIS deployments, 500.30 startup errors, missing dependencies and configuration that works locally but fails on the server.
Q7. Which technologies and issues do you cover?
C#, ASP.NET Core, MVC and Web API on .NET 6 to 10 and .NET Framework 4.x. I fix runtime and compile errors, API 400/500 errors, CORS, EF Core, LINQ and SQL Server issues, JWT and Identity login problems, and IIS or server deployment errors in existing projects.
Q8. Do you need access to my source code?
Usually yes. A GitHub/Azure DevOps invite or a zip file works. For hosting issues, I may also need server or IIS access, or screenshots.
Q9. How fast can you fix my issue?
Most single bugs are fixed within 24 hours. Send me the error first and I’ll give you an honest time estimate before you order.
