I found a workaround on EdgeDriver Github - this appears to be a webdriver issue:
opened 06:31PM - 25 Feb 25 UTC
bug
I have an application using Selenium to automate Edge browser that throws this e… rror message: probably user data directory is already in use, please specify a unique value for --user-data-dir argument, or don't use --user-data-dir (SessionNotCreated)
This error happens using a new profile directory too.
**Windows Version**: Windows 10 Version 22H2 (build 19045.5487)
**Selenium Version**: 4.29.0
**Edge and Edgedriver version**: 133.0.3065.82
This is the code:
```
service = EdgeDriverService.CreateDefaultService();
var options = new EdgeOptions();
var driver = new EdgeDriver((EdgeDriverService)service, (EdgeOptions)options);
```
When I run this app manually for the first time it throws this exception:
session not created: probably user data directory is already in use, please specify a unique value for --user-data-dir argument, or don't use --user-data-dir (SessionNotCreated)
StackTrace:
at OpenQA.Selenium.WebDriver.UnpackAndThrowOnError(Response errorResponse, String commandToExecute)
at OpenQA.Selenium.WebDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters)
at OpenQA.Selenium.WebDriver.StartSession(ICapabilities desiredCapabilities)
at OpenQA.Selenium.WebDriver..ctor(ICommandExecutor executor, ICapabilities capabilities)
at OpenQA.Selenium.Chromium.ChromiumDriver..ctor(ChromiumDriverService service, ChromiumOptions options, TimeSpan commandTimeout)
at OpenQA.Selenium.Edge.EdgeDriver..ctor(EdgeDriverService service, EdgeOptions options, TimeSpan commandTimeout)
at OpenQA.Selenium.Edge.EdgeDriver..ctor(EdgeDriverService service, EdgeOptions options)
at AppWeb.frmAppWeb.EjecutarConexion()
And creates automatically an entry in Windows Registry key "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Compatibility Assistant\Store".
When I run the application again it works as expected. If I remove this entry, error shows up again.
On the first try (with error) msedge.exe commandline is:
> "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --allow-pre-commit-input --disable-background-networking --disable-backgrounding-occluded-windows --disable-client-side-phishing-detection --disable-default-apps --disable-hang-monitor --disable-popup-blocking --disable-prompt-on-repost --disable-sync --enable-automation --enable-logging --log-level=0 --no-first-run --no-service-autorun --password-store=basic --remote-debugging-port=0 --test-type=webdriver --use-mock-keychain --user-data-dir="C:\Users\MAUROD~1\AppData\Local\Temp\scoped_dir8168_1802574373" --edge-skip-compat-layer-relaunch data:,
On the second try (without error) msedge.exe commandline is:
> "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --allow-pre-commit-input --disable-background-networking --disable-backgrounding-occluded-windows --disable-client-side-phishing-detection --disable-default-apps --disable-hang-monitor --disable-popup-blocking --disable-prompt-on-repost --disable-sync --enable-automation --enable-logging --log-level=0 --no-first-run --no-service-autorun --password-store=basic --remote-debugging-port=0 --test-type=webdriver --use-mock-keychain --user-data-dir="C:\Users\MAUROD~1\AppData\Local\Temp\scoped_dir18024_701312417" data:,
The problem is that when I start my app from another process that was called from an browser extension using Native Host Messaging, it always throws that exception. And even if I start my app manually using "Run As Administrator" always throws that exception too.
Selenium Log:
2025-02-24 23:18:18.999 TRACE SeleniumManager: DEBUG msedgedriver not found in PATH
2025-02-24 23:18:19.001 TRACE SeleniumManager: DEBUG MicrosoftEdge detected at C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
2025-02-24 23:18:19.001 TRACE SeleniumManager: DEBUG Running command: wmic datafile where name='C:\\Program Files (x86)\\Microsoft\\Edge\\Application\\msedge.exe' get Version /value
2025-02-24 23:18:19.001 TRACE SeleniumManager: DEBUG Output: "\r\r\n\r\r\nVersion=133.0.3065.82\r\r\n\r\r\n\r\r\n\r"
2025-02-24 23:18:19.001 TRACE SeleniumManager: DEBUG Detected browser: MicrosoftEdge 133.0.3065.82
2025-02-24 23:18:19.001 TRACE SeleniumManager: DEBUG Required driver: msedgedriver 133.0.3065.82
2025-02-24 23:18:19.002 TRACE SeleniumManager: DEBUG msedgedriver 133.0.3065.82 already in the cache
2025-02-24 23:18:19.002 TRACE SeleniumManager: INFO Driver path: C:\Users\Mauro Dimare\.cache\selenium\msedgedriver\win64\133.0.3065.82\msedgedriver.exe
2025-02-24 23:18:19.002 TRACE SeleniumManager: INFO Browser path: C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
2025-02-24 23:18:19.002 TRACE SeleniumManager: Driver path: C:\Users\Mauro Dimare\.cache\selenium\msedgedriver\win64\133.0.3065.82\msedgedriver.exe
2025-02-24 23:18:19.002 TRACE SeleniumManager: Browser path: C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
2025-02-24 23:18:19.592 DEBUG HttpCommandExecutor: Executing command: []: newSession
2025-02-24 23:18:19.634 TRACE HttpCommandExecutor: >> POST RequestUri: http://localhost:45960/session, Content: System.Net.Http.ByteArrayContent, Headers: 2
{"capabilities":{"firstMatch":[{"browserName":"MicrosoftEdge","ms:edgeOptions":{"binary":"C:\\Program Files (x86)\\Microsoft\\Edge\\Application\\msedge.exe"}}]}}
2025-02-24 23:18:19.715 TRACE HttpCommandExecutor: << StatusCode: 500, ReasonPhrase: Internal Server Error, Content: System.Net.Http.StreamContent, Headers: 1
{"value":{"error":"session not created","message":"session not created: probably user data directory is already in use, please specify a unique value for --user-data-dir argument, or don't use --user-data-dir","stacktrace":"\tGetHandleVerifier [0x00007FF68182E735+13397]\n\tMicrosoft::Applications::Events::EventProperty::empty [0x00007FF681ABB1B4+2060276]\n\tMicrosoft::Applications::Events::EventProperty::empty [0x00007FF681A12338+1368440]\n\t(No symbol) [0x00007FF6815F0382]\n\t(No symbol) [0x00007FF6815EA827]\n\t(No symbol) [0x00007FF68162FD84]\n\t(No symbol) [0x00007FF681623FC3]\n\t(No symbol) [0x00007FF6815F8B96]\n\t(No symbol) [0x00007FF6815F7E50]\n\t(No symbol) [0x00007FF6815F89C3]\n\t(No symbol) [0x00007FF681680214]\n\t(No symbol) [0x00007FF6817106CF]\n\t(No symbol) [0x00007FF681683A53]\n\tMicrosoft::Applications::Events::EventProperty::to_string [0x00007FF681B745BD+279981]\n\tsimdutf::get_active_implementation [0x00007FF6817B78C1+409457]\n\tsimdutf::get_active_implementation [0x00007FF6817B2BA4+389716]\n\tsimdutf::get_active_implementation [0x00007FF6817B2CE9+390041]\n\tsimdutf::get_active_implementation [0x00007FF6817A62E6+338326]\n\tBaseThreadInitThunk [0x00007FFE4DF37374+20]\n\tRtlUserThreadStart [0x00007FFE4FDDCC91+33]\n"}}
2025-02-24 23:18:19.724 DEBUG HttpCommandExecutor: Response: ( SessionNotCreated: System.Collections.Generic.Dictionary`2[System.String,System.Object])
I tried the workaround below and it works for me.
Add an entry of Name: 'ms:edgeOptions', Type='Dictionary', open Value and enter the below:
Name='args', Type='List' and Value='--edge-skip-compat-layer-relaunch' (which is a String type)
This affects a version of Edge 133, the current stable release. There is a suggestion to use an earlier edgedriver as mentioned in the GitHub link above but I haven’t tried (someone in that thread mentioned it didn’t work)
Katalon Studio allows you to define desired capabilities for local execution with Chrome, Firefox, Internet Explorer (IE), Safari, Edge or Edge (Chromium) in Project > Settings > Desired Capabilities > WebUI > ...
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