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My small C# / ASP.NET web application, hosted on a Windows server (IIS), stopped allowing log-ins this morning. Instead of authenticating, it immediately throws the “Incorrect password” message for every user, even when the credentials are definitely right. The only recent change was pointing the site to a new hosting URL; no code edits, database schema changes, or server-side patches were applied. The app talks to a remote SQL Server database, so connection-string or cookie encryption mismatches might also be in play. I need someone who can jump in right now, review the configuration and code, identify what broke, and restore normal authentication without downtime. Deliverables: • Working log-in on production URL • Brief note of the root cause and the exact fix applied (config line, code patch, IIS tweak, etc.) If you’re comfortable troubleshooting .NET authentication flows, connection strings, and Windows hosting quirks—and you’re free to start immediately—please reach out and I’ll give you RDP/FTP access straight away.
Project ID: 40588151
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Active 7 days ago
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I can start immediately and troubleshoot your ASP.NET/IIS application to identify why authentication is failing after the hosting URL change. I'll verify the configuration, connection strings, authentication flow, and IIS settings, restore login functionality, and provide a brief report explaining the root cause and fix.
₹1,000 INR in 1 day
2.2
2.2
24 freelancers are bidding on average ₹429 INR/hour for this job

Hello, I have over 7 years of experience with ASP.NET and IIS servers. Please message me for more details. Thank you.
₹500 INR in 40 days
6.1
6.1

Greetings, I have reviewed your project description and recently worked on a similar project: ”Deployments/ .net core backend developments”. I believe I can help you deliver this successfully. Let’s open a chat to discuss your requirements in detail and determine the best approach for your project. Regards
₹400 INR in 40 days
4.2
4.2

As a seasoned digital solutions specialist, I understand the urgency and frustration that can arise when critical systems like yours fail. My extensive experience with the .NET framework and SQL, combined with my dedication to prompt problem-solving, makes me the perfect fit for your project. Given the symptoms you're experiencing - "Incorrect password" prompts, despite correct credentials - I strongly suspect that the recent URL change is the culprit. However, it's essential to meticulously analyze your codebase, connection strings, cookies encryptio,n, or even server-side changes for a comprehensive diagnosis. Rest assured that not only will my approach be thorough and effective in resolving your login issue and restoring normal authentication on your production URL but I’ll also provide you with a detailed report outlining the root cause of the issue and the exact fix I’ve performed. Let's get started so we can minimize any potential downtime and restore seamless usability for your users pronto!
₹250 INR in 40 days
3.7
3.7

As a seasoned full-stack developer with a deep understanding of C# and .NET development, I am best positioned to tackle your urgent login issue. Having worked on various web applications leveraging ASP.NET, MVC architectures, and Web API, I bring a wealth of experience when it comes to troubleshooting and identifying solutions to unexpected bugs. My proficiency in addressing database related problems is another vital boon you can benefit from. In several instances, I have configured and ensured optimal connection strings, mitigated potential cookie encryption mismatches for smooth authentication and successful user log-in. Moreover, my extensive experience in developing secure authentication protocols using JWT amongst other methods will be paramount in guaranteeing the end-to-end security infrastructure of your application. Moreover, I pride myself in my rapid response time, enabling clients like yourself to receive immediate solutions without compromising on quality. As cloud database services are also not new territory for me, interacting with your remote SQL server won't be an issue either. My goal is not just to solve the problem at hand but to equip you with the knowledge you need moving forward. So let me help you restore normal authentication without more downtime and eliminate any further hassles for your site users.
₹250 INR in 40 days
3.0
3.0

❤️Hi there!❤️ I can swiftly troubleshoot your C# / ASP.NET web application login issue caused by the recent hosting URL change. I specialize in .NET authentication flows and Windows hosting quirks and can start immediately to restore normal authentication without downtime. Let's connect so I can assist you promptly with this matter. This project aligns perfectly with my expertise, and I assure you of delivering the required solution within the specified timeframe with 100% accuracy. I am eager to collaborate with you on this task. Please take a look at my profile for more information. I understand that your C# / ASP.NET web application is facing login authentication issues after a recent hosting URL change, and you need immediate assistance to resolve this without any downtime. I am confident in my ability to troubleshoot and fix these issues efficiently. Looking forward to working together on this project to get your web application back up and running smoothly. Let's connect and discuss further. Warm regards, Thaveesha.
₹250 INR in 40 days
1.7
1.7

Hi, I can start on this immediately. Since the issue appeared right after moving to a new hosting URL, I'd first check the authentication configuration, connection strings, machine keys, cookie settings, and IIS configuration before making any code changes. In many cases, problems like this are caused by environment or hosting configuration rather than the application itself. I'll identify the root cause, restore the login without affecting the rest of the application, and share a clear summary of what was wrong and exactly what was changed so you have a record for future deployments. If you can provide RDP/FTP access, I'll begin troubleshooting right away. Thanks, Deepak
₹400 INR in 40 days
0.0
0.0

Hi There, I can help you troubleshoot and fix this right away. I have solid experience with C#, ASP.NET, IIS hosting, SQL Server, authentication issues, and production deployments. I'll quickly identify the root cause—whether it's a configuration, connection string, cookie encryption, or IIS setting and restore login functionality with minimal disruption. I'm available to start immediately, and I'll also provide a brief summary of the issue and the fix once it's resolved. Let's get connected for more details. Regards, Palak
₹550 INR in 30 days
0.0
0.0

Hi, I can start right away and troubleshoot the issue. I have experience with C#, ASP.NET, IIS, and SQL Server, including authentication problems caused by configuration changes, machine keys, connection strings, cookie encryption, and hosting migrations. I'll identify the root cause, restore the login without unnecessary downtime, and provide a brief summary of what was wrong and the exact fix applied. I'm available to begin as soon as you share the server access (RDP/FTP). Thanks!
₹350 INR in 40 days
0.0
0.0

Hi, The fact that the issue started immediately after changing the hosting URL suggests this is more likely a configuration or environment problem than an application bug. I'd begin by checking the authentication flow end-to-end, including the connection string, authentication configuration, IIS settings, cookie behavior, and any environment-specific values that may have changed during the migration. If needed, I'll also trace the login process to identify exactly where valid credentials are being rejected. I'm comfortable troubleshooting production issues methodically and documenting both the root cause and the exact fix, whether it's a configuration change, IIS setting, or code adjustment. Once access is provided, I can start immediately and focus on restoring authentication as quickly as possible while minimizing disruption. Looking forward to helping you get the application back online.
₹250 INR in 40 days
0.0
0.0

Navi Mimbai, India
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