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Error creating an organization relationship in Exchange Online

Microsoft 365 and Office 365 admins can set up an organization relationship with another Microsoft 365 or Office 365 organization.

Exchange Admin Center

Go to Exchange Admin Center.

Select Organization > Sharing > Organization sharing 

Add new Organization sharing

Error

If you encounter an error during this operation, you can resolve it with this procedure: open Powershell with administrator privileges

Run this command to connect to the tenant that needs to share its calendar. You will be shown the Microsoft login and password form to access the tenant that needs to share its own cloud.

Connect-ExchangeOnline

You are now connected.

Run this command to get information about the tenant you need to grant access to. . Replace the tenant name

Get-FederationInformation -DomainName externaltenant.com

The procedure may take a few minutes to complete. From the final result you need to copy somewhere the string you see after the TargetAutodiscoverEpr tag which should be something like https://autodiscover-s.outlook……..

At this point, launch this command by replacing the name you want to give to the external share, the name of the external tenant used in the previous command and finally the http string between double quotes.

New-OrganizationRelationship -Na
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Microsoft Authenticator: Installation on a new smartphone

Scenario: You use Microsoft Authenticator to access your Microsoft 365 account. You have changed your smartphone and you need to re-initialize the Authenticator on the new smartphone.

The procedure must be performed by the Tenant administrator.

Enter portal.office.com of the Tenant with administrative role.

Microsoft Entra

In the “Microsoft 365 Administration Center” on the left click on “Identity” (If you do not see it click on “Show All”).

At this point you will be projected into the “Microsoft Sign In Administration Center”.

On the left select “Users”.

On the right, search for the user and select it. On the user page, on the left, select “Authentication Methods”

On the new page, at the top right, there is a button “re-enroll multi-factor authentication”.

Azure Portal

Microsoft Entra user management can also be reached from the Azure portal by selecting “Microsoft Entra ID”. Then select “Users” and continue with the previous procedure.

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How to open MS office files on desktop app by default on Teams

Scenario. You have some Excel files on your Teams channels. When you open the file , it takes you to your internet browser.

To open MS Office files on the desktop app by default on Teams, follow these steps:

1. Open Microsoft Teams. On the left of your profile picture in the top right corner of the screen, there are three point.Click it
2. Select Settings from the dropdown menu.
3. Click on File and links in the left-hand menu.
4. Go to “File Opening Preferences” and select Desktop (Browser appears by default)

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Exchange Online / Microsoft 365 SMTP settings

Generic settings

  • SMTP server: smtp.office365.com
  • Port: 587
  • Requires SSL: Yes
  • Requires TLS: Yes (if available)
  • TLS version : 1.2
  • Authentication: Yes
  • Username: email address
  • Password: Your passwor

User configuration

SMTP sending is not enabled by default.

  • Log in as administrator to the account
  • Tab – Mail
  • Click on “Manage email applications”
  • Select Authenticated SMTP
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Microsoft MFA : Enabled or Enforced

Multi Factor Authentication (MFA)

Microsoft recommends using multi factor authentication for global tenant administrators. If you don’t do this, 60 days after the last reminder from Microsoft, the tenant is deactivated.

Warning: it’s not enough to activate 2-factor authentication … you also have to use it.

Enabled or Enforced

The problem is that activation is not enough. In fact, after activating the user, he must also log in with the MFA: at this point the user’s status changes from Enabled to Enforced.

You don’t have to have Global Admin with MFA in Enabled status but only in Enforced status.