My pc crashes when I open http://ip:8123

Can’t hurt to try (and yes, it should)

From Oracle VirtualBox website:

  • New April 16th, 2024
    VirtualBox 7.0.16 released!

    ATTENTION: PLEASE REFRAIN FROM UPGRADING TO 7.0.16 FOR NOW. THIS RELEASE HAS AN ISSUE WHICH MIGHT CAUSE HOST OS CRASH WHEN VM IS CONFIGURED TO USE BRIDGED OR HOST-ONLY NETWORKING. WE WILL SEND AN ANNOUNCEMENT TO MAILING LISTS WHEN FIX WILL BE AVAILABLE FOR DOWNLOAD. Oracle today released a 7.0 maintenance release which improves stability and fixes regressions. See the Changelog for details.
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This was the exact cause of my issue too. 7.0.18 has been released on 03/05/24 and it seems to be working for me so far.