Get help for the account you use with Microsoft. Find how to set up Microsoft account, protect it, and use it to manage your services and subscriptions.

Learn how to turn on device encryption, or standard BitLocker encryption in Windows.

Wenn Ihr Kauf von Office oder Microsoft 365 mit einem Product Key verbunden war, geben Sie Ihren Product Key auf einer der Websites ein, die nachstehend für Ihr Produkt aufgeführt sind.

How to lock cells in Excel to protect your data. You can also unlock a range of cells and grant permissions to others to edit.

How to set up Xbox Cloud Gaming on a Steam Deck device using the Microsoft Edge browser.

View your Outlook email messages arranged by conversations to see messages that share the subject line grouped together.

Learn how to insert data from a picture with Excel - and you can use your smartphone or tablet to take the picture. Excel's powerful AI capabilities can convert your hand written or printed data into a table.

How to sign in to Outlook on the web, access your email, contacts, and calendar.

Learn how to remove passwords from your Microsoft account to increase security.

If Office activation fails, you'll see Unlicensed Product or Non-commercial use / Unlicensed Product in the title bar of your Office apps, and most features of Office are disabled. To restore all features of Office, you'll need to fix the problem that's causing activation to fail.