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End of support for Cortana - Microsoft Support
Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.
Microsoft Store & billing help
Get Microsoft billing support. Find help with Microsoft Store purchases, subscriptions, refunds, payment options, and checking your order history.
Get started with Chat - Microsoft Support
Chat lets you connect with others, stay up to date on projects, and express yourself, whether you're in the office, at home, or on the go with the Microsoft Teams app. In Teams, you'll see three types of chats: One-on-one chats: to connect with people individually.
Applies To: Microsoft Teams
How to go passwordless with your Microsoft account
Going passwordless refers to removing your password and using a passwordless method to sign in instead. Passwordless solutions such as Windows Hello, the Microsoft Authenticator app, SMS or Email codes, and physical security keys provide a more secure and convenient sign-in method. While passwords can be guessed, stolen, or phished, only you can provide fingerprint authentication, or provide ...
Applies To: Microsoft account dashboard
Saving credit or debit card info in Microsoft Edge
Saving to Microsoft account is currently available in US, AU, GB, CA, DK, FR, JP, MX, KR, BR, and will be available to more regions in the future.
Applies To: Microsoft Edge
Poll attendees during a Teams meeting - Microsoft Support
As a meeting presenter, you can use Microsoft Forms to create polls before your Microsoft Teams meeting, then launch them during it so attendees from any endpoint (mobile, web, desktop) can view and answer. When you launch your poll, it will pop up on attendees' meeting screens as well as in the meeting chat. Attendees can also create ad-hoc polls during a meeting to get quick feedback on the ...
Applies To: Microsoft Forms, Microsoft Teams
Change macro security settings in Excel - Microsoft Support
Disable all macros except digitally signed macros This setting is the same as the Disable all macros with notification option, except that if the macro is digitally signed by a trusted publisher, the macro can run if you have already trusted the publisher. If you have not trusted the publisher, you are notified. That way, you can choose to enable those signed macros or trust the publisher.
Applies To: Excel for Microsoft 365, Excel 2021, Excel 2019, Excel 2016, Excel 2013
OneDrive won't start - Microsoft Support
In order to sync with OneDrive for work or school, the DisableFileSyncNGSC key must be removed or the DWORD value must be changed to 0 (zero). If the registry value was set as part of a Group Policy Object, the policy must be removed.
Applies To: SharePoint in Microsoft 365
Excel functions (alphabetical) - Microsoft Support
Function name. Type and description. ABS function. Math and trigonometry: Returns the absolute value of a number ACCRINT function. Financial: Returns the accrued interest for a security that pays periodic interest ACCRINTM function. Financial: Returns the accrued interest for a security that pays interest at maturity ACOS function. Math and trigonometry: Returns the arccosine of a number
Applies To: Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016, Excel Web App
Change site access permissions for extensions in Microsoft Edge
Choose the required access permission for the selected extension: When you click the extension: This setting only allows the extension to access the current site in the open tab or window when you click the extension.If you close the tab or window, you’ll have to click the extension to turn it on again.