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πŸ”— How to enable 'external access' to collaborate in Microsoft Teams?

How to enable 'External Access' in Microsoft Teams Admin Center

Browse to: https://admin.teams.microsoft.com/company-wide-settings/external-communications to enable external access.
Or follow the instructions in the video by browsing to: https://admin.teams.microsoft.com/ or https://admin.microsoft.com/
Users can communicate with other Skype for Business and Teams users.
Users can communicate with Skype users.
This can take up to 24 hours after activation.

Enable "Allow all external Domains" in the tab: Teams and Skype for Business users in external Organizations

How to enable guest access in Microsoft Teams Admin Center

Navigate to: https://admin.teams.microsoft.com/company-wide-settings/guest-configuration

Enabling Remote Access for Microsoft Teams requires these settings.

Allow Guest Access in Teams - ON
call - Make Private Calls - ON
Meeting - Allow IP Video - ON
Screen Share Mode - ON
Allow Meeting Now - ON
This may take up to 24 hours after activation.

External identities - Setting up external collaboration settings in Azure Active Directory (AD)

By default, each tenant set as shown below. Within this external identities panel, you can make adjustments to include fewer or more security features.

Navigate to the Azure Panel for External Identities ->https://portal.azure.com/#blade/Microsoft_AAD_IAM/CompanyRelationshipsMenuBlade/Settings

Guest user access restrictions

This setting determines whether guests have full access to list all users and group memberships (most inclusive), limited access to other users and memberships, or no access to other users and group memberships, including groups of which they are members (most restrictive).

Guest invite settings

This setting determines who can invite guests to your directory to collaborate on resources protected by your Azure AD, such as SharePoint-sites or Azure resources.

Collaboration restrictions

Allow or block specific domains.

Block guest access to specific Microsoft Team sites

If you have enabled guest access but do not wish guests to be welcome in some teams you can disable this via the SharePoint panel.

1. Use the SharePoint administrator panel

Browse to the SharePoint administrator panel from the admin center. https://admin.microsoft.com
Select Sites, Active Sites
Select the desired team
Click on policy
External Sharing

2. Activate "Persons in the organization only"

Select between these 4 options: Persons in the organization only
Everyone
New and existing guests
Existing guests only
Persons in the organization only

Other practical Microsoft Teams blogs

How to prevent users from deleting channels, tabs & apps in Teams
Communicating with remote users in Microsoft Teams - conferencing
How to share files in Microsoft Office 365 and Teams - 8 scenarios
How to import users and guests in CSV in Office 365 or Azure AD?
Adding multiple users to a Team simultaneously

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Peter van Helden
Peter van Helden
3 years ago

Hi Jasper, nice description of the settings, but what I want is the following: for some teams I want to prevent guests from being added to a team, but I want members of this teams to be able to share files with external mail addresses. If I turn off external sharing, to prevent guest access, then members of the team can no longer share files either. How can I configure that at the organizational level guest access is possible within teams , disable this for some teams , but allow them to share files with external mail addresses within this teams ?

Dave Hendriks
Dave Hendriks
3 years ago

Indeed good site with lots of tips!
I have added guests in a team but they cannot see the documents. However, the internet users can see them. What am I doing wrong? Hope you can help me on my way.

testodwTessa
3 years ago

Hi Jasper, I can't get it to add guests to a team at all. have turned on guest access in admin but still can't add guests. do guests have to have an account before they can be added to a team?

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