Note: If it’s been fewer than 10 days since you upgraded to Windows 10, your previous version of Windows will be listed as a system file you can delete.If you need to free up drive space, you can delete it, but keep in mind that you'll be deleting your Windows.old folder, which contains files that give you the option to go back to your previous version of Windows.

Find operating system info in Windows 8.1 or Windows RT 8.1. To find out which version of Windows your device is running, press the Windows logo key key + R, type winver in the Open box, and then select OK.. If your device is running Windows 8.1 or Windows RT 8.1, here’s how to learn more:

On the Switch out of S mode (or similar) page, select the Get button. After you see a confirmation message on the page, you'll be able to install apps from outside of the Microsoft Store.

Windows devices may 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 will let you know if you need to restart your device to complete an update, and you can choose a time that works best for you to complete that update.

To do this. Press. Move to the Tell me or Search field on the ribbon and type a search term for assistance or Help content.. Alt+Q, then enter the search term. Open the File menu.. Alt+F. Open the Home tab and format text and numbers and use the Find tool.. Alt+H. Open the Insert tab and insert PivotTables, charts, add-ins, Sparklines, pictures, shapes, headers, or text boxes.

To get support in Outlook.com, click here or select Help on the menu bar and enter your query. If the self-help doesn't solve your problem, scroll down to Still need help? and select Yes.. To contact us in Outlook.com, you'll need to sign in.

Learn how to update Windows to ensure your device operates smoothly and securely with the latest features.

Press this key. To do this. Command + Shift + B. Show or hide the favorites bar. Command + Shift + C . Open Developer tools. Command + D. Save your current tab as a favorite. Command + Shift + D. Save all open tabs as favorites in a new folder

Troubleshooting: I don't see Automatic Replies. If you don't see Automatic Replies after selecting File, you're probably using a Gmail, Yahoo, or other POP or IMAP account that doesn't support the Outlook Automatic Replies feature.You can set up a rule that will reply to incoming messages—if you leave Outlook running while you're away.

Notes: If you know your password, but just want to change it, go to account.microsoft.com Security tab, and select Change my password. If you know your username and password but they have stopped working, read My username and password have stopped working.