Summary. This update addresses a security vulnerability in the Remote Authentication Dial-In User Service (RADIUS) protocol related to MD5 collision problems. Because of weak integrity checks in MD5, an attacker might tamper with packets to gain unauthorized access.

If you need instructions for adding an email account using advanced settings, go to Use advanced setup to add a POP or IMAP email account in Outlook for PC. Outlook won't accept my password. If Outlook won’t accept your password and you know you’re using the right password for your Gmail account, you might have an older version of Outlook that doesn't currently support this faster Gmail ...

Using the new Microsoft Teams, you can now be logged into multiple work, school, and personal accounts on the Windows desktop app. Easily switch back and forth between organizations, including guest organizations. ... Select Add another account. Choose an account you've previously signed in with.

If the spell checker flags certain words as misspelled and you want it to ignore these words, add them to the default custom dictionary. To change the default custom dictionary where these words are added, see Change the custom dictionary to which the spelling checker adds words, below.. When checking spelling and grammar automatically, right-click the word with the red squiggly line and ...

To add a specific address or domain to the Safe Recipients List, click a message from the sender. On the Home tab, in the Delete group, click Junk, and then click Never Block the Group or Mailing List. To manually add names or domains to these lists, do the following: On the Home tab, in the Delete group, click Junk, and then click Junk E-mail ...

Add a contact from someone's profile card. If you're using Outlook in an organization and you click someone's name or picture in Outlook or other Office apps and services, you might see a profile card with additional information. From their profile card, you can save those details to your own contacts, and then add Notes or other information.

However, Windows Security is pre-installed and ready for you to use at any time. If you want to use Windows Security, uninstall all of your other antivirus programs and Windows Security will automatically turn on. You may be asked to restart your device.

Important: Microsoft accounts, the Windows operating system, and other Microsoft products include passwords to help secure your information.This article provides some options that you can use to reset or recover your password if you forget it. Be aware that, if these options don’t work, Microsoft support can't help you retrieve or circumvent a lost or forgotten password.

If your admin allows custom script on a site, you need "Add and Customize Pages" permission (part of the Design and Full Control permission levels) to run the script in the file types listed above. For the list of file names restricted by the sync app, see Invalid file names and file types in OneDrive and SharePoint .)

Make sure your firewall or security software is configured correctly with these ports. If your firewall restricts access to these ports, check your firewall or security software settings or check with your system administrator.