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Microsoft 365 and Office | Install, redeem, activate | For business | Windows
Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello, I have installed the Office 365 application on my computer. I am attempting to activate/authorize Word using an Office 365 account purchased by my company; however, I am unable to sign in. On the sign-in page, I receive the following message: "This username is incorrect. Please check that you have entered it correctly, or contact your system administrator." I have checked your website for contact information but have been unable to find a way to reach a customer service representative. Could you please look into this issue, or have a representative call me back? I require online assistance, as I have no other way to reach your team to resolve this sign-in problem.
Double-check with your company IT support or local Office admin that you are in fact using the correct credentials. If there is a problem with your account, your admin have to contact Microsoft support for you.
Contributors here in Q&A do not have access to account and billing information. We are your fellow users of Microsoft products and services.