Active Directory

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Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.

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Andy's VMware vSphere tip#3 - Experiments in TIME. Just call me a TIME LORD!

Real life example, a client added 20 new hosts to a large vSphere Cluster, DRS was enabled, and after a few minutes, VMs started to populate the new hosts. (via VMotion/DRS)

A very large outsourcer, then suddenly found issues with Active Directory Replication across the business and also Microsoft Exchange email servers services started to fail.

Because of TIME, TIME had skewed between Active Directory servers and Microsoft Exchange servers by 1.5 hours! and all stopped replicating, and services failed! Active Directory and Microsoft Exchange failed. Logons and email stopped working for many thousands of employees!

The reason, a few of the new ESXi hosts, were syncing time from a rouge time server, which was giving the WRONG time, the time in fact was 1.5 hours ahead.

You may be thinking, ah, they are using VMware Tools to sync to host! - No!

This function has been removed from VMware Tools for many years!

BUT here is a golden nugget, did you know that a vMotion of a VM will sync time with the host unless disabled!

Time is resynchronized when you migrate the virtual machine using vMotion, take a snapshot, restore to a snapshot, shrink the virtual disk, or restart the VMware Tools service in the virtual machine (including rebooting the virtual machine).

Source
https://kb.vmware.com/s/article/1189

https://kb.vmware.com/s/article/1318

So please make sure your VMware …
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Cloud Class® Course: MCSA MCSE Windows Server 2012
LVL 12
Cloud Class® Course: MCSA MCSE Windows Server 2012

This course teaches how to install and configure Windows Server 2012 R2.  It is the first step on your path to becoming a Microsoft Certified Solutions Expert (MCSE).

Exchange Admins,
Exchange Administrator of a O365 tenant that is using either DirSync or AADSync are no longer supported and may not work correctly. These tools are no longer supported as of April 2017, and after December 31, 2017 O365 team are not able to guarantee your connections from Windows Azure Active Directory Synchronization (DirSync) or Azure AD Sync work properly.  This may affect your ability to synchronize your local directory infrastructure with Office 365, and will result in users being unable to log in to their Office 365 services.

Recommended action
Azure Active Directory (AAD) Connect is the best way to connect your on-premises directory with Azure AD and Office 365.  Upgrade your sync functionality to the latest version of Azure AD Connect, which is the currently supported tool for syncing data to O365 cloud features.

Hope it helps.

Thanks
MAS
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in my Organization two Actiev directory servers,
Primary server is 2012R2
secondary server is 208R2
recently i have migrated my primary server,in that Group policy some errors coming ,can i use Backup server
for Group policy setting,is it work and clients can sysnch with Backup server
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LVL 26

Expert Comment

by:Brian B
You have entered this as a post, but it looks like you are asking for help. To get the best response from the Experts, you should probably re-submit this as a question using the "ask a question" button at the top of the page, or this link: https://www.experts-exchange.com/askQuestion.jsp

If you do ask a question, please post the link to it back here so others can find your question and help you more quickly.

Please see here for further details: http://support.experts-exchange.com/customer/portal/articles/756544-how-to-succeed-at-ee-as-an-asker
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The Tech or Treat contest winner has been chosen! Congratulations to expert Thomas Zucker-Scharff, our champion, who submitted an article on a suspected hack into his work device that, to this day, has never been solved.
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Expert Comment

by:Juana Villa
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Can you use azure active directory to connect to a local work-group of PC's that does not have a local DC ?
The aim is to have azure act as the DC for the local machines. We dont want to use virtual desktops.

kind regards
mark
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Author Comment

by:pcstech-mwarren
Thanks Brian , my bad
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LVL 26

Expert Comment

by:Brian B
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I recently passed my Microsoft 70-346 Exam.  As part of my revision I used Flash Cards that I created to help memorise key information.  The Flash Cards have been created on Cram and I've recently made them public.  You can access them from here:

http://www.cram.com/flashcards/70-346-8863906

I've gone overboard on the amount of information on there but It might help those attempting to pass this exam.  Obviously this is to be used in conjunction with other courses.  I can recommend the course on Platform Scholar.

The information on the Flashcards are valid as far as I am aware.  Obviously I take no liability for incorrect information.
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LVL 1

Expert Comment

by:Joe Danyi
Thank you for the flash cards! you Rock
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LVL 22

Author Comment

by:David Atkin
Thanks Joe :) .  I've got my 70-347 shortly as well.  If I pass, I'll make those publicly available as well.

Also, if you want an online video I highly recommend the Platform Scholar courses.
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Skyport2-SocialMedia-LinkedInV2.pngDid you miss our co-branded webinar with Skyport Systems yesterday? Check out the recorded webinar available on-site to learn how to secure your Active Directory against security threats.
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error issuing replication:  8453 (0x2105)
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LVL 26

Expert Comment

by:Brian B
You might want to repost this as a question instead of a post, since more Experts will see it and they also will get points for answering.
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Get your problem seen by more experts
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Get your problem seen by more experts

Be seen. Boost your question’s priority for more expert views and faster solutions

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New freeware from CodeTwo to automate bulk upload of user photos to Office 365


Hi there,

We (CodeTwo) have released a new free tool for bulk Office 365 user photo management - CodeTwo User Photos for Office 365. This application is a twin program of our other well-known freeware for user photo management CodeTwo Active Directory Photos, but it operates in Office 365.

CodeTwo User Photos for Office 365 will handle everything from photo preparation, through auto matching, to straightforward bulk upload of users’ photos to Exchange Online mailboxes. No need to use PowerShell and the Set-UserPhoto cmdlet – the entire process is easily handled via an intuitive GUI.

Here you can watch how the program works:
https://www.youtube.com/watch?v=w6eLrwLVY3o&t=1s?sts=6789

You can also find more details on program’s official website or this blog post.

Enjoy!
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Active Directory

77K

Solutions

39K

Contributors

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.

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