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Tiens van Zyl
I’m currently busy testing a few things and copied my lab DC’s virtual disk to 2 other machines. I need to decommission Active Directory on these two machines and thought that I’d share the steps on here.
First off the Domain Controller is decommissioned and then Active Directory is decommissioned. Note that the server is the only DC in my network which means I’m also showing the step to decommission the last DC in an AD environment.
I stumbled across Zentyal which seemed to be quite an interesting Linux distribution. I say that as they claim to be able to replace Microsoft’s Small Business Server (SBS) and co-exist with Active Directory and Exchange.
Have a look at their website for all the features.
I wanted to install the guest additions after installing Zentyal in Oracle’s Virtual Box to run the virtual machine in full screen mode. This was not as straight forward as I though it might be. Below is a video tutorial that I created to show how to install the guest additions in Zentyal. (Watch in HD and full screen)
Also note: the links below the video are for the sites I used to get this working.
Zentyal’s Forum link
Random IT Blog
Ever needed to check your memory for problems from within Windows 8/8.1 ?
Then check out the video below to show you how to run a memory test from within windows.
Microsoft has done away with dcpromo when it comes to Windows Server 2012.
We’ve been so accustomed to using dcpromo that I actually struggled a bit to promote a 2012 server to a DC in one of my labs. This short video shows how to install the Active Directory Directory Services role on the server and that there is a small step you need to complete after the installation as just installing the role does not promote your server to DC status.
This small step cost me 5 minute of head scratching and going back to my training manual. Easy to forget and find but here’s a quick how to.
I’m not an AD expert but it’s good to practice this once in a while as you might get tasked to “quickly” set-up an environment for a client and practice makes perfect 🙂
Had an interesting one today with a bit of a lesson at the end of the article.
Users are able to connect to Exchange with Outlook, send and receive mails etc. Users are however unable to set up their Out of Office using Outlook but they are able to set it using Outlook WebApp. We have a hybrid Exchange environment with 2010 and 2007 CAS servers. In the back-end we are running an Exchange 2007 CCR Cluster.
Past troubleshooting with regards to Out of Office not working has taught me to check and test autodiscover. I bet that the OAB is also not downloading?
I ran the normal checks such as checking the certificates and running nslookup to see if autodiscover.domain.com redirects to autodiscoverredirect.domain.com asn it did.
My next step was to check IIS as I’ve had a previous issue there. Low and behold I noticed that an ex-admin used his credentials for authentication. This caused issues as the admin’s account has been deleted a few days ago as he left our company. I then created a service account and added the credentials in IIS to ensure that this does not happen again. Users reported that Out of Office is working again.
Below are some screenshots for where I changed the credentials. Note that when I tried opening any settings under the Autodiscoverredirect Webpage in IIS that the error explicitly told me that the account for admin-abc had problems authenticating. The challenge was that I was not too sure where this is supposed to be changed. But here you go:
1. Open IIS on your CAS server and browse to Sites => AutodiscoverRedirect (Or whatever you named it)
2. On the right click on “Advanced Settings”
3. Click on “Physical Path Credentials” and then set. Add your service account credentials and save.
This solved my issue with redirection.
Lesson: No matter how many years of experience admins have, the still seem to take the quick route of using their personal credentials where a service account should be used causing issues for your users and customers. Don’t be a lazy engineer and use the service accounts and remember to document EVERYTHING!
I started learning development for Android and downloaded the Eclipse IDE that includes the Android SDK from the Android Development site. Eclipse should be installed after you installed the Java Runtime Environment.
On both my machines I received the below error when starting Eclipse. In my case I think it has to do with the fact that i installed Eclipse and the JRE to D:\ instead of the default locations in the installers.
I solved this issue by:
1. Right click the Eclipse exe and choose properties.
2. In the Target field add -vm “D:\Program Files\Java\jdk1.7.0\bin” behind the D:\adt-bundle\adt-bundle-windows-x86_64-20130729\eclipse\eclipse.exe
3. In essence it should look like your_drive_letter:\path to eclipse installation\eclipse\eclipse.exe -vm “drive_letter_where_JRE_is_installed:\Program Files\Java\jdk_version_number\bin”
4. Click apply and ok.
Eclipse should now start without any problems.