Error6 reports
Fix SessionNotCreatedException
in Selenium
✅ Solution
The SessionNotCreatedException in Selenium usually arises from a mismatch between the WebDriver version (e.g., ChromeDriver, EdgeDriver) and the browser version installed. To fix this, download the WebDriver version that corresponds to your current browser version from the official vendor website (e.g., ChromeDriver downloads for Chrome) and ensure it is accessible on your system's PATH, or specify the webdriver path when instantiating the webdriver in your code. Alternatively, use a WebDriver manager like WebDriverManager to automatically handle driver downloads and configuration.
Related Issues
Real GitHub issues where developers encountered this error:
[🐛 Bug]: Unable to create a new chrome session with SNAPSHOT of 4.39.0Dec 5, 2025
[🐛 Bug]: selenium.common.exceptions.SessionNotCreatedException; This version of Microsoft Edge WebDriver only supports Microsoft Edge version 138 Current browser version is 140.0.3485.66Sep 12, 2025
[🚀 Feature]: Add Windows-specific troubleshooting for SessionNotCreatedException SummarySep 12, 2025
[🐛 Bug]: selectSlot() latency under load due to getLoad() + parallelStream() causes random SessionNotCreatedExceptionAug 29, 2025
[🐛 Bug]: Unable to launch browser with latest version of chrome (Version 138.0.7204.169 (Official Build) (64-bit))Jul 29, 2025
Timeline
First reported:Jun 26, 2025
Last reported:Dec 5, 2025