How to fix Microsoft 365 error about another account from your organization is already signed in on this computer

This article will explain how to resolve the Microsoft 365 app error — “Sorry, another account from your organization is already signed in on this computer”.

Microsoft 365 is a subscription-based service that provides users with a range of productivity and collaboration tools, such as Word, Excel, OneDrive, etc. Recently, some users have encountered issues when attempting to use Microsoft 365 app. However, this article provides solutions to address this error.

I recently experienced an issue while attempting to open documents in Microsoft Office applications on Windows. My Office applications are licensed under a Microsoft 365 license, and the documents I wanted to open were stored in OneDrive for Business. Upon trying to open the documents in the desktop application, an error message was displayed: “Sorry, another account from your organization is already signed in on this computer”. The account was not found in the Connected Services section. When attempting to add OneDrive for Business to Connected Services section with the correct account, the same error was encountered.

The detailed error message is as below:

Follow the below solution steps to resolve Microsoft 365 error “another account from your organization is already signed in on this computer”.

It has been determined that the issue arises when a user from the same organization (tenant) as the Microsoft 365 account is signed in on the computer or to an Office app (Word, Excel, Outlook, etc.). Microsoft 365 only supports one session for users from the same organization. So it is expected that this behavior will arise if another account belonging to the same organization is already signed in to Office 2013 using a different Microsoft 365 user account.

Explain in another way, if you are attempting to log in to a Microsoft 365 account from the same organization as a Microsoft 365 account already signed in to Office on the same computer, this may result in an error.

This issue typically arises when an account has difficulty authenticating or has not logged into Office for an extended period of time. It can be resolved by reauthenticating, though it must be done in a specific manner.

Office 2013 applications allow users to access Microsoft 365 content stored on SharePoint Online using their Microsoft 365 user ID and password. For individuals with multiple Microsoft 365 user IDs from different organizations, they can access data from the SharePoint Online deployments of each organization.

Office 2013 supports a single Microsoft 365 user sign-in per session from each tenant or organization. Office 2013 attempts to prevent the sign-in of a second user from the same organization. Nevertheless, there may be occasions when this situation is not detected and the Office 2013 user interface may indicate that a second user has successfully signed in. In this instance, the second user will not be able to access the content. All Microsoft 365 content that the second user attempts to open will be processed using the credentials of the first user.

It is important to note that Office 2013 adheres to all document and SharePoint Online library permissions. If a user does not have access to a document that another user has access to, and the second user attempts to open the document while they believe they are signed in, the document will not open as Office attempts to open the document using the first user’s credentials.

In order to resolve this issue, users who are signed in to Office 2013 should sign out and restart their computer. This will ensure that the system is in a clean state when the other user attempts to sign in. If restarting the computer fails to resolve the issue, , then adjusting the registry is the recommended solution.

If you are encountering the error message “Sorry, another account from your organization is already signed in on this computer” while using Microsoft 365, you can resolve the issue by following the suggestions provided below.

If you are trying to sign in to a shared computer or if multiple users use the same computer, make sure that each person has their own Microsoft 365 account and signs out of the account when they’re done using it.

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