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3,246

Consolidating Windows Active Directory Domain Controller Certificates

BrentCrummey on Jul 01 2024 03:32 PM
What is this I am Hearing about Consolidating our Windows Active Directory Domain Controller Certificates?
1,152

Stop Worrying and Love the Outage, Vol III: Cached Logons

Chris_Cartwright on Jun 20 2024 10:05 AM
How small is too small, and why you should care!
7,264

NTLM vs Kerberos

JoshMora on Apr 23 2024 07:47 AM
In this post, we will go through the basics of NTLM and Kerberos. We will explain using the three Ws, covering what the ...
2,728

Speaking in Ciphers and other Enigmatic tongues fresh content update!

JIMT05 on Apr 03 2024 04:27 AM
This article was first published on TechNet on Dec 08, 2015, Hi! Jim Tierney here again to talk to you about Cryptograph...
25.8K

THIS JUST IN!!!!  High LSASS Usage After Windows Update 3B March 2024

JIMT05 on Mar 25 2024 03:16 PM
THIS JUST IN!!!! High LSASS Usage After Windows Update 3B March 2024 
6,224

We need to discuss the Microsoft Certification Authority Web Enrollment (CAWE) Role

RobGreene on Mar 14 2024 03:17 PM
Hello everyone, this is Rob Greene. I recently had a case where a customer was having trouble with the CAWE pages. I rea...
4,868

So, you think you’re ready for enforcing AES for Kerberos?

Chris_Cartwright on Mar 08 2024 03:45 PM
We have many customers asking questions about how to track down the usage of RC4 in their environment. Over the years, w...
3,060

Stop Worrying and Love the Outage, Vol II: DCs, custom ports, and Firewalls/ACLs

Chris_Cartwright on Feb 26 2024 01:32 PM
Today, we focus on an aspect of security theater that is constantly producing outages: Messing with Active Directory por...
20.9K

Stop Worrying and Love the Outage, Vol I: Group Policy and Sharing Violations

Chris_Cartwright on Jan 26 2024 07:43 AM
Today, we delve into why it really does matter where you edit group policy.
4,345

KRB_AP_ERR_BAD_INTEGRITY

jessev on Jan 12 2024 01:38 PM
9,270

Windows Server vNext at Microsoft Ignite, and What's New in Active Directory Technical Takeoff

Ryan Ries on Nov 28 2023 12:48 PM
Hey everybody, Ryan Ries here with a quick heads-up that there is some hot-off-the-presses content you need to check out...
25.7K

Preview of SAN URI for Certificate Strong Mapping for KB5014754

Ryan Ries on Apr 06 2023 08:33 PM
Hello, this is Matthew Palko, senior product management lead in Enterprise & Security, and today I have some information...
16.7K

Having issues since deploying November 2022 Security Updates to your domain controller?

DavidFisher on Dec 13 2022 01:36 PM
Hello, Chris here from Directory Services support team. Taking a breather from the phone calls. In the past few weeks, t...
21K

So, you say your DC’s memory is getting all used up after installing November 2022 security update

DavidFisher on Dec 13 2022 01:35 PM
After installing the November 2022/Out of Band update on your domain controllers you might experience a memory leak happ...
439K

What happened to Kerberos Authentication after installing the November 2022/OOB updates?

DavidFisher on Dec 13 2022 01:35 PM
With the November 2022 security update, some things were changed as to how the Kerberos Key Distribution Center (KDC) Se...
62.3K

November 2022 Out of Band update released! Take action!

JR_Nieves on Nov 18 2022 03:53 PM
Greetings from the Windows Directory Services team!The team wanted to bring to your attention the November 17th, 2022 re...
42.3K

Active Directory Web Services Event 1202

Ryan Ries on Jul 10 2020 07:07 AM
Hey there! Josh Mora here, with a brief post on an issue I recently had and wanted to make public, in hopes this will he...
35.8K

Deep Dive: Active Directory ESE Version Store Changes in Server 2019

Ryan Ries on Apr 04 2019 08:30 PM
First published on TechNet on Oct 02, 2018 Hey everybody.
49.3K

TLS Handshake errors and connection timeouts? Maybe it’s the CTL engine….

Ryan Ries on Apr 04 2019 08:29 PM
First published on TechNet on Apr 10, 2018 Hi There! Marius and Tolu from the Directory Services Escalation Team.
22.1K

ESE Deep Dive: Part 1: The Anatomy of an ESE database

Lindakup on Apr 04 2019 08:28 PM
First published on TechNet on Dec 04, 2017 hi!Get your crash helmets on and strap into your seatbelts for a JET engine /...
18.8K

Introducing Lingering Object Liquidator v2

Ryan Ries on Apr 04 2019 08:25 PM
First published on TechNet on Oct 09, 2017 Greetings again AskDS!Ryan Ries here.
8,101

Active Directory Experts: apply within

JustinTurner on Apr 04 2019 08:25 PM
First published on TechNet on Jul 26, 2017 Hi all! Justin Turner here from the Directory Services team with a brief anno...
17.6K

Using Debugging Tools to Find Token and Session Leaks

Ryan Ries on Apr 04 2019 08:25 PM
First published on TechNet on Apr 05, 2017 Hello AskDS readers and Identity aficionados.
22.4K

Troubleshooting failed password changes after installing MS16-101

Lindakup on Apr 04 2019 08:21 PM
First published on TechNet on Oct 13, 2016 Hi!Linda Taylor here, Senior Escalation Engineer in the Directory Services sp...

Latest Comments

RobGreene
in THIS JUST IN!!!!  High LSASS Usage After Windows Update 3B March 2024 on Jul 10 2024 08:01 AM
Hey @dlepper7485 There can be any number of reasons for lsass.exe to grow in size on any Windows OS Version. If you are saying that this memory grow has started after a security update, then that issue would have to be troubleshoot for that security update as it would be unique to that security upda...
0 Likes
dlepper7485
in THIS JUST IN!!!!  High LSASS Usage After Windows Update 3B March 2024 on Jul 10 2024 06:48 AM
I've been looking for a related post for this, but has anyone encountered this same issue on client machines. Doesn't seem to be massively widespread for us, but have had it on the latest versions of Win10 and Win11. LSASS memory usage grows in a linear fashion along with uptime, until it crashes, r...
0 Likes
David Bargna
in Consolidating Windows Active Directory Domain Controller Certificates on Jul 09 2024 10:46 AM
@RobGreene we need to update Kerb template to support windows hello for business and thought we could kill all our problems with one cert. As for ldap we have thousands of Linux machines and apps which we point to various aliases for historical/political and other reasons and we just need a guarante...
0 Likes
RobGreene
in Consolidating Windows Active Directory Domain Controller Certificates on Jul 09 2024 09:05 AM
@David Bargna This is where you have to be a little creative. What you put there would more than likely work. Other than our recommendation here in the blog, is there another reason why you are wanting to use the Kerberos Authentication template? Do you need to support KDC Strict Validation Checks f...
0 Likes
David Bargna
in Consolidating Windows Active Directory Domain Controller Certificates on Jul 09 2024 04:38 AM
@RobGreene thanks for the comprehensive reply. How do you normally handle certs for LDAPS then when you need to use an alias such as ldap.foo.org? Kerb auth cert has client/server auth, domain controller cert also client server. Do we copy the Kerb auth template and remove server auth key usage, the...
0 Likes