beta version 30.0 refuses to download and install in the creative cloud desktop app

I'm afraid I'm still getting the same error...

A fix for this has been made and should be available in the next Beta build.

Hello @PixlPusher , @Mass.Illusion , @bjepstone , @mral5 , @MTSBob thank you for raising and confirming this. I'll get this checked as soon as possible.

I have the exact same problem installing Illustrator 30.0 Beta. Will not pass the OS Checksum. It seems Adobe isn't ready for latter Windows 11 24H2 - 25H2 versions.

Windows 11 Pro
Intel Core i9-14900K 6.3ghz
256gb Ram
NVIDIA RTX 4080

Exit Code: 190
-------------------------------------- Summary --------------------------------------
- 2 fatal error(s), 0 error(s), 7 warnings(s)

FATAL: Sanity check for installation failed. Current OS version 10.0.26120 doesn't satisfy OS requirements.
FATAL: Error occurred in install product workflow with error code 190 error message
WARN: GetIEProxyInfo - Failed to get proxy for the url, error:12180
WARN: GetIEProxyInfo - Failed to get proxy for the url, error:12180
WARN: GetIEProxyInfo - Failed to get proxy for the url, error:12180
WARN: GetIEProxyInfo - Failed to get proxy for the url, error:12180
WARN: GetIEProxyInfo - Failed to get proxy for the url, error:12180
WARN: GetIEProxyInfo - Failed to get proxy for the url, error:12180
WARN: GetIEProxyInfo - Failed to get proxy for the url, error:12180
-------------------------------------------------------------------------------------

I am having the same problem as well on Windows 11 Version 25H2 (26220.6690):

Exit Code: 190
-------------------------------------- Summary --------------------------------------
 - 2 fatal error(s), 0 error(s), 7 warnings(s) 

FATAL: Sanity check for installation failed. Current OS version 10.0.26220 doesn't satisfy OS requirements.
FATAL: Error occurred in install product workflow with error code 190 error message 
WARN: GetIEProxyInfo - Failed to get proxy for the url, error:12180
WARN: GetIEProxyInfo - Failed to get proxy for the url, error:12180
WARN: GetIEProxyInfo - Failed to get proxy for the url, error:12180
WARN: GetIEProxyInfo - Failed to get proxy for the url, error:12180
WARN: GetIEProxyInfo - Failed to get proxy for the url, error:12180
WARN: GetIEProxyInfo - Failed to get proxy for the url, error:12180
WARN: GetIEProxyInfo - Failed to get proxy for the url, error:12180
-------------------------------------------------------------------------------------

same!

Can confirm the same here. Beta 30.0x refuses to install on Win 11 25H2 with an error about unmet system requirements.