Hi Jorge and Dean,
Answers and more description:
- I don't have personal access to the network in question, but I trust the guys
over there to give me quite correct information. Of course, it's never the same
as seeing yourself.
- The NTDS dump I mentioned is by using the operational dumpDatabase attribute
of RootDSE.
- The missing groups are not visible with any of the following:
- The previously mentioned NTDS dump
- NET LOCALGROUP or NET GROUP
- NT User Manager
- ADSI Edit
- ADUC search feature
- The Member Of tab of a user in ADUC does not list the missing groups.
- The old members of the groups can access the resources (even though they
don't show in the Member Of tab).
- In ACL Editor, the missing groups show as names, not SIDs
- You can create a new group in NT User Manager with the same SAM name as the
missing one. After that, it also shows in ADUC. And after that, the missing
group shows as a SID in ACL Editor, and not by name anymore.
- The forest has a root and three child domains, and this problem appears in
one of the child domains.
- The problem domain has 3 DCs.
- The missing groups are global groups.
- I have to ask them to check the WHOAMI/SECTOK thing.
It seems that the groups are gone from the DCs but are still cached in the
member servers. But its funny that this caching still applies after several
weeks. But still the question remains how do the missing groups get in the
users' access tokens.
Because they cannot add users to the missing groups, they could create a new
group for each missing group, which the suffix NEW, for example. And add all
the correct users to these new groups (the member information is available).
But those new groups would need to be added to all the resources in all the 50
member servers.
They could also try the following:
- perform the in-place upgrade again from the roll-back BDC to a new empty
forest/domain
- migrate (with ADMT) the groups in question to another empty forest/domain
- then migrate (with ADMT) the groups in question to the current production
domain (if ADMT allows this, and if the RIDs of the incoming missing groups are
not already reused in the production domain
Yours, Sakari
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