[Troubleshooting 101] Timed out waiting for the driver server to start

Tips and Tricks
1

Dear testers,

If you are seeing this error in Katalon Studio, it usually means your Microsoft Edge Driver is incompatible with your current version of the Edge browser or your OS build.

Follow these steps to synchronize your driver and get your tests running again.

Step 1: Identify Your OS Build

Before downloading a new driver, you need to know exactly which version your system requires.

  1. Click the Start menu and select Settings (the gear icon).
  2. Navigate to System > About.
  3. Scroll down to Windows specifications and find the number next to OS Build.

Step 2: Download the Matching Edge Driver

  1. Visit the official Microsoft Edge Driver download page.
  2. Locate the driver version that matches your OS Build or your current Edge Browser version.
  3. Download the version specific to your architecture (e.g., x64 for 64-bit Windows).

Step 3: Replace the Driver in Katalon Studio

Once downloaded, you need to manually swap the old driver file for the new one within the Katalon directory.

  1. Locate your Katalon Studio installation folder.
  2. Navigate to the following path:

...\Katalon_Studio_Windows_64-x.x\configuration\resources\drivers\edgedriver_win64

  1. Delete the existing msedgedriver.exe.
  2. Copy the new driver you just downloaded and paste it into this folder.
  3. (Optional) Restart Katalon Studio to ensure the changes are initialized.

Pro-Tip: Automatic Updates

If you want to avoid doing this manually in the future, you can try using Katalon’s built-in update tool:

  • Go to Tools > Update Web Drivers > Edge.
  • Note: If this built-in tool fails, the manual steps above are the guaranteed fix.
2 Likes
2

thanks for the info

1 Like
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Do we have plan to integrate library like selenium manager for automatic driver updates if inbuilt update tool doesn’t work due to unforeseen situations

1 Like
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selenium manager has been pretty reliable for handling driver versions automatically, especially when browsers update unexpectedly
if Katalon could integrate something similar as a fallback when the built-in updater fails, it would save a lot of manual driver chasing

3 Likes
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Let katalon product team confirm on this