Internal microphone of laptop not working after update to W11 24H2

[Windows 11]

After the installation of the W11 24H2 update the internal microphone (Intel microphonearray) of the HP Envy notebook is deactivated and it is not possible to activate it. According to the device manager the micropone should be ok (says newest driver is installed and working). The HP-"Audiodiagnose" did not identify any problem. Nevertheless the microphone is not working. The same problem exists on our second HP Envy notebook. However after a rollback to W11 23H2 on this notebook the microphone did funtion again. There must be an incompatibility between the HP notebook and W11 24H2 Update. How

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