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Copied from samba upstream BZ:

After installing the 2021-10 Monthly Rollup patch (KB5006743), printing no longer works on my Windows 7 clients. Those clients are joined on a Samba 4.14.5 AD-DC, that is configured as a print server with point-n-print drivers installed. Deinstalling the patch recovers the printing ability.

The log.smbd is filled with lines like

[2021/10/16 09:02:13.643376,  0, pid=549200, effective(1001, 100), real(1001, 0), class=rpc_srv] ../../source3/rpc_server/rpc_server.c:743(dcesrv_auth_gensec_prepare)
  dcesrv_auth_gensec_prepare: Failed to prepare gensec: NT_STATUS_INVALID_SERVER_STATE

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: samba security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2022:2074