Microsoft Teams

🤔 Microsoft Teams Guest Access & Multiple Accounts: Everything You Need to Know

Explore managing multiple Microsoft Teams accounts, using Teams Connect, guest access tips, and multi-tenant access—key topics in the Microsoft tech community.
Dominic Kent
Dominic Kent is a content marketer specializing in unified communications and contact centers.

Microsoft Teams guest access is the most read post on the Microsoft tech community forum. More users than ever are struggling to manage Microsoft Teams multiple accounts and are fed up of switching between Microsoft Teams tenants.

The post has 380k+ views since 2016 and we're seemingly getting closer to a solution.

This post has been constantly updated as different workarounds and cries for help have emerged.

You may have heard that Teams Connect was announced at Microsoft Ignite in March 2021. Further details were unveiled at Microsoft Ignite in November 2021.

With Teams Connect, you’ll be able to share channels with anyone, internal or external to your organization.

Teams Connect

Microsoft says “the shared channel will appear within an individual’s primary Teams tenant alongside other teams and channels.”

Teams Connect is now available for general use.

Read: Microsoft Teams Connect: Shared Channels Are Now Available

How do I manage multiple Microsoft Teams?

While the desktop version of Microsoft Teams doesn't support the management of multiple Teams, you can use this workaround to manage multiple Teams accounts:

  1. Open your Microsoft Teams desktop on the tenant you will spend most of your time in.
  2. Open a browser and open the browser version of Microsoft Teams for the tenant you spend the next amount of time in.
  3. Add additional tabs to your browser as you need access to more tenants.

This hack allows you to have access to all the tenants you need.

Microsoft Teams guest access on desktop

As a partner, consultant or customer of a business that uses Microsoft Teams, you can be added as a guest to let you access files, chats, and information from the external company.

Keeping connected to external businesses is crucial to communication and collaboration.

Microsoft Teams guest access is great and is absolutely required. If you're new to guest access within Microsoft Teams, it's easy to enable.

How does guest access work in Microsoft Teams?

1. Notification received on Microsoft Teams for a one to one chat, group message or channel activity
2. Select the account that you have guest access to
3.Microsoft Teams will now switch to guest access in another Microsoft tenant, going through the process of logging in from scratch
4. Respond to notifications as usual
5. Flick back to your "main" account which is probably the company you work for
6. Microsoft Teams switches back to your main account, going through the process of logging in from scratch

Switching tenants in Microsoft Teams

Switching between Microsoft Teams accounts on mobile

On 4th August 2019, Randy Chapman, Head of Consulting at Enablit, posted a blog covering "How to add a second account to the Teams mobile app".

Here he explains that Teams users on both Android and iOS now have the ability to add more than one account to the Teams mobile client.  

How to switch between accounts on Microsoft Teams

  • Sign into Teams
  • Tap on the Menu key then navigate to Settings
  • Choose add account
  • If you signed into an existing account, tap the existing account
  • Select account and sign in
  • Switch between Microsoft Teams guest access accounts!
Microsoft Teams guest access on mobile

You may also like: Microsoft Teams and Webex: The Best of Both Worlds

The difference between SFB federation and Microsoft Teams guest access

In Skype for Business, you could turn on the federation option.

This allowed users to add external Skype for Business contacts in other companies, as well as standard Skype users.

Skype for Business Federation

This experience was perfect for users that had contacts that were customers, suppliers or any other form of external party.

From your Skype for Business interface, you have access to your internal contacts, external contacts and could group according to your personal preference or most frequently messaged contacts.

Important: federation and guest access are different scenarios. Federation allows chats with external tenants and shares presence information. Guest access requires switching to your secondary tenant (tenant you are a guest on) to access files and participate in team collaboration activities.

One to one federation in Microsoft Teams

Good news!

Enabling federation in Microsoft Teams is just as easy as it was in Skype for Business.

In the Microsoft Teams admin center, head to Org-wide settings, then click on External access.

By default, your tenant should be set to On.

Just toggle the button if not.

Configuring federation in Microsoft Teams

As you can see above, there are two options for external access.

The first allows Teams users to communicate with Skype for Business and Teams users.

The second allows Skype for Business users to communicate with Skype users. For clarity, that's consumer-grade Skype.

You may also like: How to Connect Google Chat and Microsoft Teams in 2023

Community feeling around Microsoft Teams guest access

There have been various grumbles about switching between Microsoft Teams tenants in the Microsoft community.

Darrell-as-a-Service commented on the lack of simplicity in guest mode in his blog post Tenant switching between accounts ain't fun:

"I find myself wondering when people will read and respond to my message."

Darrell's suggestion echoes most of the Microsoft community. "We want to log into our tenant and concurrently be connected to the teams where we are guests."

Microsoft Teams and Skype for Business expert, Tom Arbuthnot, suggested that, by now, we really should be able to be in multiple Teams accounts at the same time, without switching between Microsoft Teams accounts.

"I work with a lot of customers, so am guests on their tenants. I cheat and run a chrome web app for each of the guest tenants, so I can be signed into multiple tenants at the same time.

Unknown users in Microsoft Teams

Zev Yanovich also recently reported an issue when adding new external members to a team. Email addresses are being converted to "Unknown". 

Another Teams forum member, Christine Stack posted in reply that she is having a similar issue:

"If I go to Outlook to add them to the Office 365 group they show that they are added in with their correct names.  I also used the Teams & Skype admin center to check to on them but they are not listed there as users, neither is my gmail account which is functioning as a guest in Teams but my Hotmail account is listed there as a guest Teams user."

Since posting, Christine has confirmed that her issue has been remedied, but wasn't entirely sure what the solution was.

You may also like: How to use Microsoft Teams with Webex

Most heavily requested Teams feature

The Microsoft tech community forum has been asking for this since 2016.

Whilst Microsoft Teams is set to have feature parity with Skype for Business, the heavy guest users are left feeling unproductive. Microsoft's comment on this subject back in August 2018 was:

"This is still on the backlog. It is taking a fair amount of investigation to determine the best solution to the request".

Microsoft Teams Backlog
Microsoft Teams Backlog

The lack of clarity over guest access even sees the query of "Can I add guests to my team? If so, how?" make the top 10 Microsoft Teams questions during the Microsoft Ignite tour.

Aya Tange, Product Marketing Manager at Microsoft, shares the top 10 and the answer to how to setup guest access on the Microsoft blog.

Microsoft Teams guest access
Microsoft Teams guest access

You may also like: Skype for Business to Microsoft Teams Auto-Upgrades: FAQ

Initial workaround from Microsoft

Microsoft originally provided a guide to guest access. This demonstrates what you can and can't do via Microsoft Teams guest mode.

Furthermore, Microsoft has also published a matrix comparing features between external access and guest access in Microsoft Teams.

As small businesses start to receive emails alerting them to an auto-upgrade from Skype for Business to Microsoft Teams, these guides will become more and more important to set expectations within your business.

Guest access in other apps

Webex also offers guest access for external users.

When it comes to switching between Webex tenants, Lorrisa Horton made a comment in the Cisco blog regarding the experience.

"We’ve built the solution in a way that surfaces all your spaces within a single interface. It’s simple to get anyone into your Webex spaces. "

In Slack, you can add external users to either single-channel access or multi-channel access, stipulating which channels they have access to.

For this functionality to be enabled, you need to be paying for the standard Slack subscription.

Slack guest access is restricted, details are laid out on the Slack help area.

You may also like: Upgrading to Microsoft Teams, but also have Slack users?

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