Invisible digital signatures in Word, Excel, or PowerPoint. An invisible digital signature, like a visible digital signature line, assures the authenticity, integrity, and origin of a document.

Notes: If you don't see Go to Microsoft Store on the Activation page, contact your organization's support person.. If you made a substantial hardware changes to your device (such as replacing the motherboard) and you have a valid product key, try to activate Windows by phone.

Whether it’s a new job title (congratulations!) or a phone number change, make sure you keep your email message signature up-to-date. If you're using new Outlook, for more information about email signatures, or if you haven’t created one yet, see Add a signature to messages.. Select File > Options > Mail > Signatures.

Training: Watch these videos to help your school, work, or organization use Microsoft Teams to video conference, work remotely, and become proficient using Teams.

Learn how to run a disk cleanup in Windows including deleting temporary and system files to free up disk space.

The classic cold-call scam. The scammers call you and claim to be from the tech support team of Microsoft or another company. They offer to help solve your computer "problems".

Skype help & learning. Limited emergency calling Skype is not a replacement for your telephone and has limited emergency calling capabilities depending on your country.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Notes: You can either use an email address you own as a Microsoft account, or create a new address by choosing "Get a new email address" or "Use your email instead" when you sign up.

Tip: If you installed the Microsoft 365 apps as part of a suite, such as Office Home and Student or Microsoft 365, search for the suite name.For stand-alone apps search by the app name, such as Project or Visio. In most cases you can't uninstall an individual app if it's included in your Microsoft 365 suite.