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If the Encrypt contents to secure data check box is selected, you have to have the certificate that was used to encrypt the file or folder to be able to open it. In this situation, you should obtain the certificate from the person who created or encrypted the file or folder, or have that person decrypt the file or folder.

Create a team from scratch: Choose Teams on the left side of the app, then select Create and join teams and channels at the top of your teams list.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Follow these steps to automatically diagnose and repair Windows security problems by turning on UAC, DEP protection, Windows Firewall, and other Windows security options and features.

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".

Junk e-mail messages, also known as spam, can be a nuisance in your Inbox.The Junk E-mail Filter in Outlook identifies messages that are likely junk and moves them to the Junk E-mail folder. You can easily change the level of junk email protection or automatically delete junk email.

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Select a condition, and what to do with the message based on the condition. For example, to move messages with a certain title to a specific folder, select the Subject contains condition, select Move the item to folder, select or create a New folder, and then select OK.

When you're ready, select the round, red Record button, wait for the countdown, then start speaking. To record from a specific slide, go to it, and then select Record.