Tag Archives: office 365

Office 365 – Outlook keeps prompting for password

This is only a short blog post to¬† document a solution for a very annoying problem. After the automatic update of my Outlook to the latest Office 365 build (version 1809), it has started to prompting for credentials. I’m using Outlook to access a Microsoft Exchange 2016 server (on-premises), without any hybrid configuration. A pretty simple and plain Exchange 2016 on-prem deployment.

I knew, that it has to be related to Office 365, because the Outlook 2016 on my PC at the office was not affected. Only the two Office 365 deployments on my ThinkPad T480s and ThinkPad X250.

To make this long story short: ExcludeExplicitO365Endpoint  is the key! You have to add a DWORD under HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover.

HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\office\16.0\outlook\autodiscover
DWORD: ExcludeExplicitO365Endpoint
Value = 1

Restart your computer and the annoying credentials prompts are gone.

Stop using your work email for your Microsoft account

Microsoft two different logins for their services:

  • Microsoft Account (former Live ID)
  • work or school account (Azure AD)

Both are located in different directories. The Microsoft account is located in another user database at Microsoft, as a work or school account. Latter are located in a Azure AD, which is associated with a customer. Both account types are identified using the email address. Microsoft accounts are used for service like Skype, OneDrive, but also for the Microsoft Certified Professional portal. Work or school accounts are mainly used for Office 365 and Azure.

You can use your work email address for your Microsoft account, until someone creates an Azure AD, and a work or school account with the same email address is created. From this point, your login experience with the different Microsoft services will getting worse. The main problem is, that Microsoft tries to find the given account in one of their directories, and it seems that they prefer Azure AD. So the login will work, but the content of the user profile will be different, because it’s a different account.

This is a screenshot from the new login screen. As you can see, there is no way to choose if you wish to login with a work/ school or Microsoft account.

Sign in to Microsoft Azure

Patrick Terlisten/ www.vcloudnine.de/ Creative Commons CC0

This is the old login experience, where you can choose between work/ school and Microsoft account.

Sign in to Microsoft Azure

Patrick Terlisten/ www.vcloudnine.de/ Creative Commons CC0

Microsoft calls this an AzureAD and Microsoft account overlap, and they identified this as an issue. As a result, Microsoft denies the creation Microsoft accounts using a work or school email addresses, when the email domain is configured in Azure AD. Microsoft has published a blog post to address this issue: Cleaning up the #AzureAD and Microsoft account overlap

Because of this, you should avoid using your work email address for your personal Microsoft account. Even if this Microsoft account is linked to your MCP/ MCSE certifications. It is not a problem to use your personal Microsoft account, with your personal email address, for your certifications. And it is not a problem to link this account to a Microsoft partner account (as in my case).

Maybe it will be possible to merge Microsoft and work/ school accounts someday. There is an ongoing discussion about this since 2013 (Merge office365 and live accounts that use the same email address).

To remove your work or school email address from your personal Microsoft account, follow the instructions in this support artice (Rename your personal account).

Choose one, choose wisely – Office 365 tenant name

In the last months I came across several customers that were in the process to evaluate, or to deploy Office 365. It usually started with a Office 365 trial, that some of the IT guys started to play around with. Weeks or months later, during the proof-of-concept or during the final deployment, the customer had to choose a Office 365 tenant name. That is the part before .onmicrosoft.com.

Office 365 User ID Creation

Patrick Terlisten/ www.vcloudnine.de/ Creative Commons CC0

I had it multiple times, that the desired tenant name was already taken. Bummer. But the customer wants to move on, so the customer decided to take another another name. For example, they added the post code to the name, or a random string. To their surprise, I put my veto on it. They immediately understood why, after I explained the importance of the tenant name.

The tenant name is visible for everyone

When using Sharepoint or OneDrive for Business, the Office 365 tenant name is part of the URL to access the service. Due to this, the tenant name is visible for everyone, including your customers. And no one wants to click on a link that points to noobslayer4711.onmicrosoft.com.

How to build a good tenant name

When thinking about the tenant name, make sure that you involve all necessary people of your company. Make sure that the management and marketing have agreed, when you recommend a specific tenant name.

Don’t use long names, or tenant names with numbers at the end. They might look suspicious and randomly generated. Make sure, that the tenant name does not include parts that might change in the near future, for example the legal form of your company.

Don’t add the current year, month or a date to it. Don’t add things like “online” or “24” to it, except it’s part of the companies name.

If you have created a tenant during a trial or during a proof-of-concept, try to reactivate it, especially, if the tenant uses the desired name.

Currently, you can’t change the Office 365 tenant name. I don’t know if Microsoft plans to make this possible.

How to reclaim a tenant name

As far as I know there is no process for reclaiming a tenant name instantly. When the last subscription of a tenant expires, the tenant becomes inactive. After 30 days, the tenant will be decomissioned. But it takes several months, until a tenant name can be used again.

As I said: Choose one, choose wisely…