This does not work Srishti. There is an inherent fault when you click on the apply button after selection the illustrator.exe file as the default. You see it trying to action but then it just doesn't kick in. The same happens if you go to Windows Default program settings. Try to click on Illustrator 2019 and nothing happens.
Now, Windows has no changed, only Illustrator has, so it is something in the way that Adobe have coded the software registry - it's like it isn't being recognised by Windows as a registered software application within Windows. My guess is someone at Adobe stuffed up the registry process on this latest version.
Hi there,
All the users on this thread have a similar issue but not the same. Every situation here has a different fix.
XD defaulting to AI on Windows
- Please update to latest version of XD (13.1.32) to resolve the issue.
PS defaulting to AI on MAC
- Please update to latest version of Illustrator (23.0.1) to solve this issue.
For other issues: Please try these steps to correct general File association errors: How to fix broken file type associations for Creative Cloud apps
If you have tried all of these then please report your issue here: New update CC 2019 (v23) File Association Issue - Windows 10 – Adobe Illustrator Feedback and contact our support team for One-to-One support: Contact Customer Care
Regards,
Srishti