If you receive an email notifying you of unusual activity, you can see when and where your account has been accessed—including successful sign-ins and security challenges—on the Recent activity page. Microsoft learns how you usually sign in to your account and flags events that are suspicious.

When you need to protect the privacy of an email message, encrypt it. Encrypting an email message in Outlook means it's converted from readable plain text into scrambled cipher text.

Why accounts are locked and disabled. Microsoft accounts are usually locked if the account holder has violated our Microsoft Services Agreement.Here are some common reasons why accounts are locked, though not all account locks occur for these reasons:

In the Save As dialog box, in the Save as type list, select Outlook Template.

Compress the file. When you compress, or zip, your file, it decreases its size, and it might decrease it enough to fit within the Outlook size limits for attachments.The following articles describe how to compress and extract files for different Windows operating systems.

Note: The options listed in this wizard vary depending on the key selected.For example, since you cannot reassign the Windows key, the only option available is to disable it.

Notes: If you don't see an option to Cancel, but instead see a link that says Turn on recurring billing, this means your subscription is already set to expire on the date shown and you won't be automatically charged after this date. There's nothing further to do at this time, and you can continue to use the product until your Microsoft 365 subscription expires.

Right-click the app, select More, and then select Open file location.This opens the location where the shortcut to the app is saved. If there isn't an option for Open file location, it means the app can't run at startup.

The FILTER function allows you to filter a range of data based on criteria you define.

When you enter some text into a cell such as "2/2", Excel assumes that this is a date and formats it according to the default date setting in Control Panel.Excel might format it as "2-Feb".If you change your date setting in Control Panel, the default date format in Excel will change accordingly.