Can't sign in to OneDrive - Microsoft Support
OneDrive not connected. If you cannot sign in to your OneDrive sync app, or you see a message saying OneDrive is not connected, let our troubleshooter guide you through the steps to get syncing again, or follow the steps below.
Applies To: OneDrive for Business, OneDrive (work or school), OneDrive (home or personal), OneDrive (work or school) operated by 21Vianet, OneDrive for Mac, OneDrive for Windows
Account help
Microsoft account help and support. Get help with signing in, locked or compromised accounts, linked accounts, closing, reopening, and updating your security info and account profile.
Stay protected with Windows Security - Microsoft Support
Tip: If you're a Microsoft 365 Family or Personal subscriber you get Microsoft Defender, our advanced security software for Windows, Mac, iOS, and Android, as part of your subscription.Learn more at Getting started with Microsoft Defender.
Turn Microsoft Defender Firewall on or off - Microsoft Support
To turn it off, switch the setting to Off.. Turning off Microsoft Defender Firewall could make your device (and network, if you have one) more vulnerable to unauthorized access.
Product activation for Windows online & support telephone numbers
To activate Windows 10 using an internet connection: As Windows 10 will automatically activate if you are connected to the internet, you can confirm your activation status by selecting Start > Settings > Update & Security > Activation and looking under Windows.. If online activation fails, first try the activation troubleshooting in Activate Windows 10.
How to set your time and time zone - Microsoft Support
In Date & time, you can choose to let Windows 10 set your time and time zone automatically, or you can set them manually.. To set your time and time zone in Windows 10, go to Start > Settings > Time & language > Date & time.. Open Date & time settings
Get Windows updates as soon as they're available for your device
We're committed to delivering continuous innovation by releasing new features and enhancements into Windows 11 more frequently. Windows devices get new functionality at different times as Microsoft delivers non-security updates, fixes, improvements, and enhancements via several servicing technologies—including controlled feature rollout (CFR). ...
Windows 11 and Secure Boot - Microsoft Support
Learn how to change settings to enable Secure Boot if you are not able to upgrade to Windows 11 because your PC is not currently Secure Boot capable.
What are IMAP and POP? - Microsoft Support
IMAP and POP are two methods to access email. IMAP is the recommended method when you need to check your emails from several different devices, such as a phone, laptop, and tablet.
Applies To: Outlook for Microsoft 365, Outlook for Microsoft 365 for Mac, Outlook 2021, Outlook 2021 for Mac, Outlook 2019, Outlook 2019 for Mac, Outlook 2016, Microsoft 365 admin, Outlook.com, Outlook Web App for Office 365 operated by 21Vianet, New Outlook for Windows, Outlook Mail for Windows 10
Get help with Windows activation errors - Microsoft Support
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.