How to fix the Microsoft 365 sign-in loop error.
If you are trying to sign into your Microsoft Account or specifically Microsoft 365but keep getting looped back to the sign-in page. This article will show you several different things you can do to solve the problem and stop your Microsoft Account and Microsoft 365 from getting into a sign-in loop.
How to fix the Microsoft 365 sign-in loop error
Microsoft 365 is a primary component in many office environments and something that most people with a Microsoft Account use at some stage. For the most part, it is reliable, easy to use, and rarely experiences issues or outages. That said, certain errors can affect both Microsoft Accounts and Office 365. In the case of the Microsoft 365 sign-in loop, the issue is usually linked to your browser, although other factors can sometimes be involved.
This same issue can also occur in Microsoft Outlook, Live, Hotmail, etc., and is easily resolved using the methods outlined below. Although the exact cause isn’t fully known, it seems related to corruption in the cookies and/or cache of your browser. This issue tends to occur more often in Chromium-based browsers, though Firefox can also be affected. Thankfully, the solution is simple and will help prevent Microsoft Account sign-in loops in the future.
If you’re short on time, you can try using another browser until you have time to troubleshoot. Firefox is a good option if you’re currently using a Chromium-based browser like Edge or Chrome.
How do you fix Microsoft Account / Microsoft 365 sign-in loops?
One of the quickest fixes for the sign-in loop issue is to clear your browser's cookies and cache. This solution works for all browsers, including Chrome, Edge, Brave, Opera, Firefox, and Kiwi. If you're unfamiliar with clearing your browser cache or cookies, you can find online guides that walk you through the process.
How to clear the cache and cookies in Chrome, Firefox, Edge, & Brave.
On rare occasions, if this doesn’t solve the sign-in loop issue, you can try the additional solutions below.
Disable your extensions and try to sign in to your Microsoft Account / Microsoft 365 account.
If clearing the cache and cookies didn’t resolve the sign-in loop, try disabling your browser extensions. It’s possible that one of your extensions is causing the problem, so disabling all extensions and then attempting to sign in again can help you determine if this is the case. If you can sign in successfully after disabling your extensions, you’ll need to identify which one was causing the issue and remove it.
Reset or reinstall your Browser.
If none of the above solutions work, try resetting or reinstalling your browser. To reset, go to the browser’s settings and select the Reset option. To reinstall, uninstall your browser, restart your computer, and then reinstall it. This should resolve the Microsoft 365 sign-in loop, allowing you to sign in successfully.
Repair or Reset the Microsoft 365 app and the Microsoft Store app.
If you are using the app rather than the web version you can try the following steps.
- Open the Settings app on your computer and go to Apps, then find the 365 app.
- Next, click Advanced Options, then scroll down the list and click Repair (let it repair) then click Reset (let it reset).
- Once that is complete, find the Microsoft Store app click Advanced Options, then scroll down the list and click Repair (let it repair) then click Reset (let it reset)