Fix IIS Wildcard SSL for Telegram

@mascotindia123

Hello, I can quickly diagnose and fix the SSL chain issue on your IIS 10 server so Telegram accepts the webhook without certificate errors. I’ve handled wildcard certificates, intermediate chain binding, and strict API SSL requirements for third-party services like Telegram. I’ll verify the setup using external SSL checkers and run a live webhook test until it returns 200 OK. We can resolve this fast via a guided session or direct remote access. Best Regards, Harpreet Singh.

@versacode

It is possible that your certificate is not accepted by some clients as it only supports older versions of TLS. We are happy to diagnose this further and apply any necessary adjustments so that Telegram or other websites can access your website over SSL.

@wallymna

** THIS IS NOT AN AUTOMATIC BID ** Hello, this error means you have a partial SSL Certificate chain deployed which results in telegram being unable to verify your SSL certificate, this should be a quick and easy fix (I can modify your SSL Chain to have the correct .crt and .key files) to resolve this for you at a fixed cost of 26.99 USD and resolution within 1 HOUR with immediate availability, please drop me a message to get started, Thank you!

@ahmadpiran

HUMAN PROPOSAL - NO BOT TEXT Hi there, I can fix your IIS certificate chain issue immediately. The error "SSL routines::certificate verify failed" occurs because while your browser might trust the Wildcard certificate, the Telegram bot server does not have the "Intermediate" CA in its local store, and your IIS server is currently failing to send it during the handshake. I have fixed this exact issue for many clients integrating webhooks on Windows Servers. The problem is usually that the PFX file imported into IIS didn't include the full chain, or the Intermediate certificate is missing from the "Local Computer" store. I will check your binding, export the correct full-chain PFX, and re-import it so that the Telegram server receives the complete path of trust it requires to say "200 OK". If I cannot fix this and get your webhook green-lit, I will not charge you. Best, Ahmad

@vlaso

Hello, Navigating the intricate realm of server management is where I shine. Handling the backend, frontend and even mobile interfaces, my proficiency extends from domain mapping to complex API issues. Your Wildcard SSL trouble with Telegram is well within my wheelhouse and I can guarantee a swift resolution. My extensive experience with IIS Manager has exposed me to various scenarios many of which bear striking similarities to yours. One key thing that sets me apart is my proactive approach which involves adopting the perspective of end-users while debugging issues. Rest assured, I will not rest until your API endpoint is running smoothly without any SSL warnings and returns the much-anticipated "200 OK" on a live webhook test. In essence, my forte is understanding codebases holistically and this gives me an unprecedented ability to troubleshoot with minimum destructiveness. Beyond just getting your certificate green-lit as swiftly as possible, my major concern is delivering work that genuinely improves your product which aligns significantly with what you seek. Remember, when working with me, it’s not just about fixing the problem at hand but ensuring your systems are fortified for scalability and reliability in the long run. Trust me to steer your project towards success! Thanks!

@syeds273

Hey , Thank you for sharing the job details. After going through the description, it’s clear you need someone confident with Web Services, Troubleshooting, IIS, Telegram API, API, Web Security, Network Security and SSL and can deliver clean, reliable results. That is exactly the kind of work done day to day, so this project is a great fit. Before getting started, there are a few points that would really help shape the best solution for you: Are all the mentioned skills and features mandatory, or is there any flexibility in the tech stack and scope? Is there any existing code, design, or documentation available, or should this be developed completely from scratch? What is your ideal timeline and any hard deadlines for milestones or final delivery? Why work with me? 1. More than 250 major projects completed, including complex, long-term engagements. 2. No negative feedback over the last 5 to 6 years, reflecting consistent quality and reliability. 3. 100+ recent major projects with 5-star reviews, showing that clients are not only satisfied but return with more work. Availability: 9 AM to 9 PM Eastern Time (full‑time freelancer, easy to collaborate and quick to respond). Portfolio: https://www.freelancer.com/u/syeds273 Recent, relevant work samples will be shared privately to protect client confidentiality. Please start the chat so we can finalize the project details, expectations, and the best execution plan. Regards, Syed.

@rohaansheikh90

Hello Elad, I can do the work as I have recently resolved a similar issue with SSL certificates on IIS servers. I understand the importance of ensuring proper certificate chains and meeting Telegram's strict SSL requirements. I am confident that I can inspect the current setup, correct any missing intermediates, and ensure that your API endpoint can be reached over HTTPS without any issues. I have a few questions to better understand the project requirements, so please feel free to start the chat so we can discuss further and get started right away. Thanks, Rohaan Sheikh

@mharianto164

Hello, I can help resolve the SSL certificate verification error you’re encountering with your Telegram webhook. I have hands-on experience debugging SSL/TLS issues, including wildcard certificates, CA chains, and webhook integrations. Even when certificates appear valid in external checkers, errors like certificate verify failed are often caused by missing intermediate certificates, incorrect certificate chains, server configuration issues (Nginx/Apache), or outdated OpenSSL settings. I’m comfortable logging into your server via TeamViewer to diagnose and fix the issue directly, verify the full certificate chain, ensure Telegram compatibility, and confirm the webhook is working correctly. I can start right away and will keep you updated throughout the process. Please let me know when you’d like to proceed.