Bug 511426

Summary: Not possible to open standard website https://www.mobile.de
Product: [Applications] Falkon Reporter: crptdngl71
Component: generalAssignee: Unassigned bugs <unassigned-bugs-null>
Status: CONFIRMED ---    
Severity: normal CC: jurajoravec
Priority: NOR    
Version First Reported In: 25.08.2   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description crptdngl71 2025-10-31 12:39:28 UTC 
SUMMARY
Not possible to open standard website https://www.mobile.de

STEPS TO REPRODUCE
1. Open Falkon.
2. Browse to website https://www.mobile.de


OBSERVED RESULT
2. Not possible to open this website. Result is:

"Zugriff verweigert
Reference Error: 0.541d1002.1761914039.9353714

Leider können wir Ihnen keinen Zugriff auf unsere Daten gewähren.
Wenn Sie Interesse an unseren Daten haben, kontaktieren Sie uns bitte"

EXPECTED RESULT
2. Website opens (a car sale site).

SOFTWARE/OS VERSIONS
Operating System: siduction 23.1
KDE Plasma Version: 6.5.1
KDE Frameworks Version: 6.18.0
Qt Version: 6.9.2
Kernel Version: 6.17.6-1-siduction-amd64 (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i5-8350U CPU @ 1.70GHz
Memory: 16 GiB of RAM (15.5 GiB usable)
Graphics Processor: Intel® UHD Graphics 620
Manufacturer: Dell Inc.
Product Name: Latitude 7490

ADDITIONAL INFORMATION
- This website opens ok on MS Edge for linux on same computer.
- Deleting browser cache did not fix issue for Falkon.
Falkon:
Anwendungsversion: 25.08.2
QtWebEngine-Version 6.9.2
Comment 1 Juraj 2025-10-31 21:10:15 UTC 
Hello,
I can confirm this behaviour on their site.
They probably implemented very aggressive browser test/filter to block bots.

Have you tried changing user agents?
Well, I tried and still got the same results.

I also tried with Qutebrowser and got the same error.
Works fine with Firefox and Konqueror also works.
Comment 2 crptdngl71 2026-01-04 10:02:42 UTC 
I've tried with the exactly same browser ID as Edge has atm:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36 Edg/143.0.0.0
This does not work.