Copilot Sign In (2026): Where to Log In and Which Account to Use

The login screen is the easy bit. What catches people out is picking the right account, because the same Copilot behaves differently depending on who you sign in as, and Microsoft keeps the work side and the personal side apart by design.

Three kinds of account Copilot accepts

Microsoft's support page for the Copilot app splits sign-in into two sides, work or school and personal, and the personal side comes in two flavours. Here's how they compare as of October 2026:

Account type	What it means	What you get in Copilot
Personal Microsoft account	A consumer account for services such as Outlook, OneDrive and Xbox, usually tied to your personal email	Copilot draws on your own content, such as OneDrive files and Outlook.com email, plus the web. Chat, images and file uploads are free, subject to capacity and limits.
Apple ID or Google Account	A personal sign-in using an account you already have elsewhere	The same personal experience. Accepted on the web, on mobile and on macOS, but not in the Windows app.
Work or school account (Microsoft Entra ID)	The login your organisation manages, tied to your work or school email	Copilot Chat uses your organisation's data, such as chats, email and files, as well as the web, with enterprise data protection.

Signing in at all is worth doing. Microsoft says it gets you your chat history, more image creation, longer conversations and extended voice sessions. If you're wondering what the free personal side covers before you commit, I've set that out in what the free version of Copilot includes.

How to tell which account you're in

You'd think this would be obvious. It isn't, because the work and personal versions look almost identical. Microsoft gives a simple check:

1. Open Copilot, either in the app or in your browser.
2. Look at the navigation pane on the left. Your name and avatar sit at the bottom of it.
3. Find the label next to your profile. It says either Work or Personal.
4. Work means you're on your organisation's Microsoft Entra account. Personal means a Microsoft account, or an Apple or Google sign-in.
5. Still not sure? Think about the email you used. Microsoft says a work or school account is tied to your work or school email, and a personal account is tied to your personal email.

The web addresses Microsoft gives for signing in

Part of the confusion is that Microsoft names more than one address, on different pages. These are the ones it lists:

• www.copilot.com: the web app, according to the support page Get started with the Microsoft Copilot app.
• copilot.cloud.microsoft: listed on that same page as the way to use Copilot on the web.
• m365copilot.com: the address the Copilot Chat FAQ gives for signing in with your personal or work account.
• m365.cloud.microsoft/chat: where Windows sends work accounts that try the consumer app (more on that below).

On a computer or phone you don't need any of these. You sign in inside the app itself, and on new Windows 11 PCs Microsoft says the app should already be installed and pinned to the taskbar or Start menu. If the app's name has you muddled, here's what the renamed Copilot app is.

Why Windows sends your work login to a browser

Windows has two quirks, and both look like errors when they aren't.

First, Microsoft's Get started with Microsoft Copilot Chat page says the Windows app requires a Microsoft account. Apple and Google sign-ins work on the web, on mobile and on macOS, but not there. So if Copilot on Windows won't take your Google login, that's the rule, not a fault with your account.

Second, Microsoft's Learn page for IT admins says the consumer Microsoft Copilot app doesn't support Microsoft Entra authentication. Anyone who tries to sign in to it with a work account is redirected to https://m365.cloud.microsoft/chat in their default browser. If you type your work email into Copilot on Windows and a browser tab opens instead, nothing's broken. The same page tells work users to use the work Copilot app as their entry point.

Using work and personal without mixing them up

Here's the honest catch. Microsoft's own pages don't say quite the same thing about using both accounts. The Copilot Chat FAQ says you can't use Copilot with your personal and work account at the same time. The page about the updated Copilot app says you can sign in with a personal account, a work or school account, or both, and switch between them with the account switcher. It adds that work and personal experiences stay separated by design, and data doesn't flow between them.

The way I read it, both can be true. You can have both accounts signed in, but you're only ever working in one of them at any moment, and nothing you type in one shows up in the other. That same FAQ points to the cleanest fix: Microsoft Edge supports separate work and personal profiles, and makes it easy to have both open at the same time.

This matters more than it sounds. With a work sign-in, Copilot Chat has a Work IQ control at the top. On, which is the default, it answers using your organisation's files, email, Teams meetings and the web. Off, it uses only the web and the AI model's training data. The personal side has no Work IQ toggle at all. So the account you're in decides whether Copilot can see your work email. Check the label before you ask it about a client.

When sign-in lands you somewhere unexpected

• A browser opens when you sign in on Windows with a work account. That's Microsoft's redirect to m365.cloud.microsoft/chat. Use that, or the work app.
• The Windows app won't take your Apple or Google login. Use a Microsoft account on Windows, or sign in with Apple or Google on the web instead.
• The phone app stopped working after the 2026 update. Microsoft says personal-account users of the mobile app need to download the updated version to keep using it. It may install itself, or you may need to request the update.
• Your old chats seem to have gone. Check the Work or Personal label first, because the two sides don't share history. If you used more than one linked personal account, say a Google email and a Microsoft email, Microsoft says your history is brought together through your Microsoft account in the updated app.
• You've hit a limit. Free personal use is subject to available capacity and limits. Microsoft says you can upgrade or come back later.
• You can't get into the Microsoft account at all. That's an account problem, not a Copilot one, and my guide to getting back into a Microsoft account walks through it.

My advice: one browser profile per account

I'd keep one browser profile per account: a work profile in Edge signed in with your work login, and a personal profile for everything else. Skip trying to juggle both in one window. It's the setup Microsoft itself suggests, and it stops the classic mistake of asking your personal Copilot about a work document it can't see, then wondering why the answer's vague. Once you're in, here's how to get useful work out of Copilot.

If your team keeps tripping over which Microsoft account goes with which Copilot, that's the kind of AI enablement I help with. I run AI training and workshops for teams, and help businesses with AI enablement and workflow automation, so the busywork runs itself and people get time back. Most of that work is with SaaS marketing teams and small businesses. Here's how we can work together.

Frequently asked questions

Where do I sign in to Copilot?

On the web, Microsoft names www.copilot.com and copilot.cloud.microsoft, and the Copilot Chat FAQ also gives m365copilot.com. On Windows, Mac, iPhone and Android you sign in inside the Copilot app.

Can I sign in to Copilot with a Google account?

Yes, on the web, on mobile and on macOS. The Windows app requires a Microsoft account.

Why does my work account open a browser on Windows?

Microsoft's Learn page says the consumer Copilot app doesn't support work (Microsoft Entra) sign-in, so it redirects work accounts to m365.cloud.microsoft/chat in your default browser.

Can I use my work and personal accounts at the same time?

The Copilot Chat FAQ says no, while the app updates page says you can switch between them with the account switcher. Either way the data stays separate, and separate Edge profiles let you keep both open.

How do I know if I'm signed in with a work or personal account?

Look for the Work or Personal label next to your profile in the navigation pane on the left of Copilot.