Recover lost files on Windows 10 - Microsoft Support
Use this app to try to recover lost files that have been deleted from your local storage device (including internal drives, external drives, and USB devices) and can’t be restored from the Recycle Bin.
Excel video training - Microsoft Support
Make your first PivotTable. Get more out of PivotTables. Other training. Templates. A list of Excel training, from entry level to advanced skills, plus templates and other resources.
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 2016
Open XML Formats and file name extensions - Microsoft Support
The Open XML Format uses zip compression technology to store documents, offering potential cost savings as it reduces the disk space required to store files and decreases the bandwidth needed to send files via e-mail, over networks, and across the Internet. When you open a file, it is automatically unzipped.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, PowerPoint for Microsoft 365, Excel 2021, Word 2021, PowerPoint 2021, Office 2021, Excel 2019, Word 2019, PowerPoint 2019, Office 2019, Excel 2016, Word 2016, PowerPoint 2016, Office 2016, Excel 2013, Word 2013, PowerPoint 2013, Office 2013
Retrieve files from the Windows.old folder - Microsoft Support
Files and settings stored in the Users or Documents and Settings subfolders of Windows.old (including the default My Documents folder in Windows XP) might still be available in Windows.old after 28 days, but other files, including Windows installation files, will be deleted.
Windows 10 and Windows Server 2019 update history
A software update to the external provider’s DNS servers resulted in the distribution of corrupted DNS records that affected connectivity to the Windows Update service.