Tuesday, January 29, 2019

Microsoft DART is missing command prompt - how to fix this

Whenever you boot Microsoft Diagnostics and Recovery Toolkit you may want to have a command prompt or PowerShell. First of all this option is not shown. Also F10 for command prompt does not work. Also calling the cmd.exe from browse does not work. Anyway there is always a way to reach your goal ... ๐Ÿ˜†

How to achieve this:
   1. Browse with DARTs Explorer to:
   2. Start powershell.exe
   3. Optional type in cmd.exe to start regular command prompt if you feel here more comfortable.


Friday, January 18, 2019

Recover custom DNS domains in deleted Microsoft Demos tenant

In the past Microsoft cloud consultants they are using the MS cloud demo platform are sometimes connecting their own DNS domains to the Office365 tenant. 

When they delete later the tenant (it typically runs for 90 days only!) and they want to reuse their custom DNS domain in another tenant then the old DNS name is still attached to the old deleted tenant! And they can not attach it to the new tenant anymore. 

But this can be fixed!

Here is how this works:

1. The old tenant is somehow deleted but not really completely. This means:
2. Login to with your custom name: e.g. still works. Same with Azure portal. But you can not use any services from it. Also the licenses are removed for the users.
3. Navigate to: SETUP -> Domains

4. Notice the name!
5. Logout
6. Login again with the - use your DNS name you noticed from your tenant instead!
7. Navigate again to: SETUP -> Domains
8. Click on your custom domain name e.g.
9. Now you see in the top menu the option to delete it.
10. Follow the instructions (e.g. which include to move the custom DNS mail addresses back to the Microsoft generic DNS entry)
11. Voila you have your custom DNS back for using somewhere else!
12. Now you can exit the admin portal.