search for: 3a27

...the time. The first one is cancelled while the second one succeeds. This might be a samba_dlz issue though: 04-Aug-2016 17:37:15.642 database: info: samba_dlz: starting transaction on zone ad.cyberdyne.local 04-Aug-2016 17:37:15.644 update-security: error: client fdea:5b48:d4c1:1:bdaa:87cf:35dc:3a27#51511: view internal: update 'ad.cyberdyne.local/IN' denied 04-Aug-2016 17:37:15.644 database: info: samba_dlz: cancelling transaction on zone ad.cyberdyne.local 04-Aug-2016 17:37:15.670 database: info: samba_dlz: starting transaction on zone ad.cyberdyne.local 04-Aug-2016 17:37:15.675 d...

Perhaps I am on the wrong track but I would like to share some additional observations... I quickly enabled DNS query logging: # rndc querylog Then run another gpupdate on the client. During the Update I see lots of queries: 04-Aug-2016 14:46:58.414 queries: info: client 10.0.1.186#59270 (_ldap._tcp.Default-First-Site-Name._sites.dc._msdcs.ad.cyberdyne.local): view internal: query:

...000000 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000 bochsout.txt: 00540593725e[CPU0 ] write_virtual_checks(): no write access to seg 00540593814e[CPU0 ] fetch_raw_descriptor: GDT: index (3a27)744 > limit (2f) 00540593903e[CPU0 ] fetch_raw_descriptor: LDTR.valid=0 ... 00540644544e[CPU0 ] fetch_raw_descriptor: LDTR.valid=0 00540644633e[CPU0 ] fetch_raw_descriptor: GDT: index (3137)626 > limit (2f) 00540644666e[CPU0 ] prefetch: EIP [00010000] > CS.limit [0000ffff] - Sebastian