🔗 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
Enabling Remote Access for Microsoft Teams requires these settings.
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
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
2. Activate "Persons in the organization only"
Select between these 4 options: Persons in the organization only
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