After KB5004442 OPC Gateway does not work

[ClaudioCamera]

The KB5004442 raise authentication level for all non-anonymous activation requests from DCOM clients to RPC_C_AUTHN_LEVEL_PKT_INTEGRITY . The OPC Gateway which purpose is getting rid of DCOM issues is not working neither in open nor dcom mode when the "RequireIntegrityActivationAuthenticationLevel" is hardening to force the authentication level to the mentioned above. For reference https://support.microsoft.com/en-us/topic/kb5004442-manage-changes-for-windows-dcom-server-security-feature-bypass-cve-2021-26414-f1400b52-c141-43d2-941e-37ed901c769c
After March 14, 2023 it´s not gonna be possible to use none of the code to communicate diferent nodes.

[duduyoyo]

Try this to avoid DCOM hardening issue for your OPC app.