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The ASP.NET site I keep on a Western Digital “My Passport” portable drive has suddenly stopped loading; every request through IIS returns a 404 Not Found even though no code or configuration changes were made. Earlier this year everything ran perfectly, so I suspect a set of critical activation or configuration files vanished somewhere along the way. Here is the current picture: • The application targets ASP.NET Web Forms and is launched locally through IIS on Windows 10 and 11 machines. • When I browse to the root URL I receive a 404, not the expected home page. • I can share screenshots that show exactly how the pages should render. • The same behaviour occurs on any PC I plug the drive into, so portability is essential to the fix. What I need from you is a clear diagnosis and a working solution that lets the site run from the portable drive on multiple computers again. Whether that involves restoring missing activation/config files, adjusting IIS mappings, tweaking [login to view URL], or scripting a lightweight setup routine, I’m open to the best path forward as long as the outcome is: the pages load, links resolve, and the drive remains truly plug-and-play. Please let me know your approach and any quick checks you’d like me to perform. I can supply the project folder, IIS export, and additional logs as soon as we start. Additionally, portability across multiple PCs and compatibility with both Windows 10 and 11 are critical requirements.
Project ID: 40476838
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https://www.freelancer.com/projects/software-development/Parser-for-SQL-Migrations/reviews Please check my profile, I have strong experience in ASP.NET and IIS so I am confident for your project. I will use VS2026 and .NET 10 to implement first. Also I will use IIS on my windows 11 for local deploy. About 404 error I will check with debug seriously and handle correctly To check and fix issues, I will check [login to view URL] , [login to view URL] and [login to view URL] files. Because these files are related to setting basically. I am sure I can complete quicky. Let us start. Jairo
£100 GBP in 2 days
4.7
4.7
85 freelancers are bidding on average £129 GBP for this job

Hello, I came across your Fix ASP.NET Site on MyPassport and I am very interested in working with you. I have reviewed your requirements and full understand the scope of expectations. I specialize in HTML, Web Development, and have successfully delivered similar projects before. I am committed to delivering high-quality work with reliability, clarity and professionalism. I work transparently throughout the project progress, deadlines and expectation stay clear at every stage. I would be glad to disucss further details and am ready to start immediately. Looking forward to hearing from you. Regards. Anum
£135 GBP in 2 days
5.8
5.8

Hello, I am senior ASP.NET developer and Server administrator. I can fix your site 404 and other issues. Please contact me via chat Thank You
£125 GBP in 2 days
5.9
5.9

Hello, I am available now. I have read your project description carefully and I understand what you want. 300% Confidence!!! I have 7+ years of experience in Web Development, .NET, C# Programming. I have completed similar projects. Please contact me. Best regards, Steven
£140 GBP in 7 days
4.5
4.5

I understand you're experiencing a 404 error on your ASP.NET Web Forms application hosted via IIS from a portable drive, similar to how I've resolved unexpected IIS configuration issues on local development environments by systematically checking application pool identities and virtual directory mappings. My experience troubleshooting these specific IIS behaviors will be directly applicable to diagnosing why your site is returning a 404 despite no apparent code changes. My approach will involve a remote session where I'll first verify the IIS application pool configuration, focusing on its identity and permissions to access the site's files on the portable drive. I will then meticulously examine the virtual directory mappings within IIS, ensuring they correctly point to the application's root directory and that the necessary handler mappings for ASP.NET Web Forms are present and correctly configured. If these initial checks don't resolve the issue, I'll delve into IIS logs to pinpoint the exact point of failure in the request pipeline. Could the portable drive have been disconnected or experienced a filesystem error that might have affected critical configuration files? What is the exact IIS version you are running on your Windows machines? I'm available for a call to discuss these points and begin the diagnostic process.
£191 GBP in 21 days
3.2
3.2

Hello, Greetings , Good afternoon! I’ve carefully checked your requirements and really interested in this job. I’m full stack node.js developer working at large-scale apps as a lead developer with U.S. and European teams. I’m offering best quality and highest performance at lowest price. I can complete your project on time and your will experience great satisfaction with me. I’m well versed in React/Redux, Angular JS, Node JS, Ruby on Rails, html/css as well as javascript and jquery. I have rich experienced in .NET, ASP.NET MVC, Web API, IIS, C# Programming, HTML, ASP.NET and Web Development. For more information about me, please refer to my portfolios. I am checking your attachment, I'll update you shortly... I’m ready to discuss your project and start immediately. Looking forward to hearing you back and discussing all details.. For more details Chat with us
£150 GBP in 2 days
3.7
3.7

Hi, I’m Dhyan Moradiya, a skilled professional specialized in ASP.NET MVC, ASP.NET Core MVC, Blazor, and .NET Core Web API, having experience working with cloud solutions like EC2, S3, SNS, SQS, and Lambda for various functionalities. I'm excited to help with your project. I have worked on CRM, ERP, E-Commerce, and restaurant management apps, ensuring smooth functionality, user-friendly design, and bug-free code. Here’s why I'm the right choice: Proven experience with ASP.NET 4.8-6-7-8-9-10, database management, SQL Server, Payment Integration, APIs, Email, OTP, and security. Familiarity with scalable solutions for apps similar to yours. Timely delivery without compromising on quality. Let’s connect to discuss your requirements in detail. I'm eager to understand your vision and create an app that exceeds expectations. Looking forward to hearing from you! Best regards, Dhyan Moradiya
£250 GBP in 7 days
2.7
2.7

Hello I have 6+ years of strong experience in web development with multi-tier database-driven systems with rich UI. My technical expertise : => Asp.Net MVC, C#.Net, Asp.Net Core2.0,2.2,3.0,3.1, Web API 2.0,angular,Node js => Bootstrap JS, HTML5, Kendo UI, CSS3, Jquery, Javascript => SQL Server 2008 - 2016, Stored Procedures, Entity Framework, LINQ Version Control : => TFS, Git, BitBucket, SVN Tortoise I have excellent troubleshooting and debugging skills developed over the years of experience. I can do development and other services ranging from short jobs to full-time everyday work. I have knowledge in analyze database design, IIS Hosting Service Applications Hosting in Local and Live. I am also an expert into deploy projects on AWS servers and on the Microsoft Azure environment. I believe in long-term cooperation and support with a flexible working environment. Thanks
£135 GBP in 7 days
2.6
2.6

Hello, I understand you need an experienced ASP.NET developer to fix issues on your MyPassport-related website and ensure the application runs smoothly, securely, and without downtime. Projects like this usually involve debugging server-side errors, resolving authentication/session problems, fixing database connectivity, and ensuring compatibility across IIS, SQL Server, and ASP.NET environments. My solution is to thoroughly diagnose the root cause of the issue, debug the ASP.NET application, review IIS/server configurations, and implement a stable long-term fix. I can work on authentication bugs, broken redirects, API/database errors, session handling, deployment problems, and performance issues while maintaining clean and secure code practices. I’ll also test the fixes properly before deployment to avoid recurring problems. A few questions: 1. Which ASP.NET version/framework is the website currently using? 2. Are you experiencing specific errors such as login failures, 500 errors, database issues, or broken pages? 3. Will server/IIS access and source code access be provided for debugging? I’m confident I can quickly identify and resolve the issue while ensuring your site remains stable and fully functional. Please chat with me in the Freelancer chat so we can discuss the issue details and start immediately. Regards, Amit
£135 GBP in 7 days
2.5
2.5

When ASP.NET sites on external drives stop loading, the usual culprit is IIS losing app pool permissions to that path, especially if the drive letter changed after a reconnect. I would check the physical path binding in IIS Manager and the Windows event logs to pinpoint the exact error fast. Available to look at this right now and have it sorted today. The bid is based on the description and may shift once I see the actual error, but this type of fix is usually quick. Want to jump on a quick call?
£150 GBP in 2 days
2.1
2.1

Hello, I can diagnose and restore your ASP.NET Web Forms site running from your portable drive across PCs. The 404 usually points to IIS bindings, missing handlers, wrong app pool, or broken physical path. I’ll review IIS config, folder structure, fix bindings/runtime settings, and ensure it runs on Windows 10/11 reliably. Optional setup script will make it plug-and-play I’ll verify routing and integrity.
£80 GBP in 5 days
2.2
2.2

Hi, I recently helped a client resolve a similar issue with an ASP.NET Web Forms site on a portable drive, getting it running smoothly across multiple Windows machines. I can quickly review your setup, check for missing files, and adjust IIS configurations if needed. Let's start with a small test to ensure we get the site up and running for you. Best regards, Rosmar
£135 GBP in 7 days
1.8
1.8

Hi, I can help diagnose and restore your ASP.NET Web Forms site on the portable Western Digital drive so it runs correctly on multiple Windows 10 and 11 PCs. I have strong experience with ASP.NET Web Forms and application mappings. My approach is like this: 1. Verify the physical folder structure and all files in the directory. 2. Check IIS site bindings, virtual directory, and application pool settings. 3. Also ensure the .NET Framework version matches the project target. 4. Fix any missing handler mappings and routes. 5. Optionally script a lightweight setup routine so the drive can be plugged into any PC and the site registers with IIS automatically. 6. Test pages, links, and home page rendering on both Windows 10 and 11 OS. I'll provide clear instructions or a script for portability, ensuring the site works plug-and-play on any machine while keeping links and pages fully functional. Best regards Vladimir
£120 GBP in 7 days
1.0
1.0

Hello, I have understood your requirement to fix the ASP.NET site on your Western Digital “My Passport” portable drive that suddenly stopped loading, returning a 404 Not Found error. I will diagnose the issue thoroughly and provide a solution to ensure the site runs smoothly from the portable drive on multiple computers. I am Aqsa Usman, with 5 years of experience in HTML and Web Development, specializing in ASP.NET. To get a better sense of my skills, please visit my portfolio: https://www.freelancer.pk/u/Aqsa4400 Let's discuss this further. Please start the chat so we can explore the best approach to resolve the issue effectively. Best regards, Aqsa Usman
£60 GBP in 2 days
0.0
0.0

With 5+ years of full-stack development experience, I can quickly diagnose and fix your ASP.NET/IIS issue. I have strong expertise in ASP.NET MVC, .NET Core, C#, HTML, and IIS setup on Windows 10/11. I’ll review your project files, IIS export, and logs to identify the root cause and ensure the application remains portable across systems. My focus is on delivering a fast, reliable, and long-term solution so your site runs smoothly again. Let’s get started and resolve this efficiently.
£135 GBP in 2 days
0.0
0.0

Hi There , Good morning! I am professional mobile coder with skills including ASP.NET MVC, HTML, Web API, .NET, C# Programming, IIS, ASP.NET and Web Development. I am checking your attachment, I'll update you shortly... Please contact me to discuss more regarding this project. Looking forward to hearing from you soon
£20 GBP in 6 days
0.0
0.0

Hi, there A 404 across multiple machines usually isn’t random corruption — it’s almost always IIS not actually pointing at the right application root or the handler mappings for ASP.NET Web Forms no longer being registered. Portable setups on external drives tend to break when any IIS site binding or application pool identity shifts between machines. I’ve dealt with a few similar ASP.NET Web Forms setups running in non-standard environments where IIS configuration drifted across Windows installs. In those cases, the fix was rarely code-level — it was restoring proper application registration (ASP.NET feature enablement, correct .NET version targeting in the app pool, and ensuring IIS recognizes the folder as an application rather than just a directory). Once that’s corrected, routing and default document handling usually fall back into place immediately. For a portable “My Passport” setup, I’d also make sure the site isn’t relying on machine-specific IIS metabase settings or absolute path bindings. A reliable approach is to explicitly rebind the root as an IIS application on startup (or via a small setup script) and ensure Web Forms handlers are properly registered using the correct .NET feature set on each machine. The fact that it breaks identically across different PCs strongly points to either missing ASP.NET registration in IIS or the application not being recognized as an IIS application at all anymore. Best
£135 GBP in 7 days
0.0
0.0

✅✅✅ Hi, there ✅✅✅ I've read your job description carefully and I have experience about local device and ASP.NET program snyc fields. I want to confirm the current error reason, I have to check current log file and config setting first. If you don't mind, could you please share me that? Thank you.
£135 GBP in 7 days
0.0
0.0

Hi Dear! This project has truly captured my interest. It is the type of project I enjoy creating and improving. My goal is simple: to ensure a smooth process, clear communication, and deliver a result that will make you say, "That was a really good choice!" I place my top priorities on reliability and client satisfaction. If given the opportunity, I will successfully lead this project to excellence, speed, and expertise. Kind regards, Viktoriia.
£125 GBP in 3 days
0.0
0.0

This project perfectly matches my expertise and your vision for a professional, user-friendly focused on events. I am confident in delivering a seamless, efficient, and scalable solution tailored to your needs. With extensive industry experience beyond Freelancer, I prioritize clean design and smooth functionality. I welcome you to explore my portfolio for similar successful projects. Let’s discuss how I can bring your event website to life. I’m also happy to offer a free consultation to ensure everything aligns with your goals. Looking forward to collaborating with you to create an outstanding online presence.
£100 GBP in 14 days
0.0
0.0

⚠️IF YOU NOT HAPPY YOU DON'T PAY⚠️ Hi, I recently completed a similar project for a technology firm, achieving a 40% increase in site accessibility within 2 weeks. You want a clear diagnosis and effective solution to restore the ASP.NET site on your My Passport drive, ensuring it runs smoothly on multiple computers. Ultimately, have the pages loading seamlessly, links resolving correctly, and the drive remaining plug-and-play. My process: Discovery chat -> Align expectations -> Quote -> Complete milestones Can I show you? Regards, Kurt Siebritz
£100 GBP in 7 days
0.0
0.0

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