# Unable to record, getting an error **URL:** \ **Category:** Web Testing\ **Created:** [March 18, 2026, 7:57am UTC](https://forum.katalon.com/t/unable-to-record-getting-an-error/189175 "2026-03-18T07:57:19Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![anandkumar.venkatara](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/anandkumar.venkatara/32/23870_2.png) [@anandkumar.venkatara](https://forum.katalon.com/u/anandkumar.venkatara)\ **Post date:** [March 18, 2026, 7:57am UTC](https://forum.katalon.com/t/unable-to-record-getting-an-error/189175/1 "2026-03-18T07:57:19Z")
Hi Experts, need help Getting an error when I try to record - Could not start a new session. Response code 500 Getting this for all 3 - chrome, edge, & firefox And when I try to update the drivers, its actually hanging Pls. suggest Thanks ![KTLN Issue](https://europe1.discourse-cdn.com/katalon/original/3X/f/6/f62789253af01abdb211d7be1af3d17aa11a14c2.png) ---
**Author:** ![arvind.choudhary](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/arvind.choudhary/32/33165_2.png) [@arvind.choudhary](https://forum.katalon.com/u/arvind.choudhary)\ **Post date:** [March 18, 2026, 8:10am UTC](https://forum.katalon.com/t/unable-to-record-getting-an-error/189175/2 "2026-03-18T08:10:41Z")
> [@anandkumar.venkatara](#): > > Hi Experts, need help > > Getting an error when I try to record - Could not start a new session. Response code 500 > > Getting this for all 3 - chrome, edge, & firefox > > And when I try to update the drivers, its actually hanging > > Pls. suggest > > Thanks The error clearly states: > _“This version of Microsoft Edge WebDriver only supports Microsoft Edge version 144, Current browser version is 146.0.3856.59”_ Your Edge browser (v146) is **ahead of** the WebDriver (v144) — same likely happening with Chrome and Firefox. Why Driver Update is Hanging? Katalon’s built-in driver updater tries to download from the internet and often hangs due to: - Proxy/firewall restrictions (common in corporate networks) - Katalon server timeout issues - Antivirus blocking the download * * * ### **Manually Update WebDrivers** 1. Check your exact browser versions: 2. Download matching drivers manually: 3. Replace the drivers in Katalon’s folder: ```auto C:\Users\\katalon-studio\configuration\resources\drivers\ ``` (Separate subfolders for `chromedriver_win32`, `edgedriver`, `firefox`) ---
**Author:** ![depapp](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/depapp/32/29178_2.png) [@depapp](https://forum.katalon.com/u/depapp)\ **Post date:** [March 18, 2026, 8:22am UTC](https://forum.katalon.com/t/unable-to-record-getting-an-error/189175/3 "2026-03-18T08:22:58Z")
hi @anandkumar.venkatara this one is pretty straightforward, it’s a **browser ↔ WebDriver version mismatch**. From the error: > Edge WebDriver supports v144 but your browser is v146 Same thing is likely happening for Chrome & Firefox too. **Why it fails to record?** Katalon can’t start a session if the driver version doesn’t match the browser → results in that _500 error_. ### Quick fix (works every time) 1. Check your browser versions: 2. Download matching drivers: 3. Replace in: ### About the “Update driver” hanging Very common in corporate setups, usually caused by: - proxy / firewall - antivirus blocking - Katalon timeout Manual update is more reliable 👍 ### Optional (better long-term) If this happens often: - Lock browser version (disable auto-update), OR - Use Katalon Runtime Engine with managed env If you want, share your Chrome/Edge versions and I can point you to the exact driver build 👍 ---
**Author:** ![dineshh](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/dineshh/32/24488_2.png) [@dineshh](https://forum.katalon.com/u/dineshh)\ **Post date:** [March 18, 2026, 5:43pm UTC](https://forum.katalon.com/t/unable-to-record-getting-an-error/189175/4 "2026-03-18T17:43:01Z")
you can chat with AI models and try the suggested solution ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [March 18, 2026, 10:24pm UTC](https://forum.katalon.com/t/unable-to-record-getting-an-error/189175/5 "2026-03-18T22:24:45Z")
> [@anandkumar.venkatara](#): > > And when I try to update the drivers, its actually hanging Are you behind a firewall or a proxy of your organization? If so you need to configure your project to live with them. ---
**Author:** ![anandkumar.venkatara](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/anandkumar.venkatara/32/23870_2.png) [@anandkumar.venkatara](https://forum.katalon.com/u/anandkumar.venkatara)\ **Post date:** [March 19, 2026, 8:07am UTC](https://forum.katalon.com/t/unable-to-record-getting-an-error/189175/6 "2026-03-19T08:07:12Z")
Hi I don’t see the configuration folder inside .katalon folder ---
**Author:** ![anandkumar.venkatara](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/anandkumar.venkatara/32/23870_2.png) [@anandkumar.venkatara](https://forum.katalon.com/u/anandkumar.venkatara)\ **Post date:** [March 19, 2026, 8:07am UTC](https://forum.katalon.com/t/unable-to-record-getting-an-error/189175/7 "2026-03-19T08:07:17Z")
Thanks Arvind But I don’t see the configuration folder inside katalon-studio folder ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [March 19, 2026, 10:08am UTC](https://forum.katalon.com/t/unable-to-record-getting-an-error/189175/8 "2026-03-19T10:08:07Z")
> [@kazurayam](#): > > Are you behind a firewall or a proxy of your organization? Please answer to this question. Yes or no? If yes, describe how your machine is connected to the Internet. ---
**Author:** ![anandkumar.venkatara](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/anandkumar.venkatara/32/23870_2.png) [@anandkumar.venkatara](https://forum.katalon.com/u/anandkumar.venkatara)\ **Post date:** [March 20, 2026, 5:52am UTC](https://forum.katalon.com/t/unable-to-record-getting-an-error/189175/9 "2026-03-20T05:52:45Z")
Thanks everyone I upgraded to 11.0 and not getting the error now ---
**Author:** ![Falak](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/falak/32/33440_2.png) [@Falak](https://forum.katalon.com/u/Falak)\ **Post date:** [March 22, 2026, 9:00am UTC](https://forum.katalon.com/t/unable-to-record-getting-an-error/189175/10 "2026-03-22T09:00:52Z")
i was also getting this error, Updating chrome and edge driver solve it.