How to restore an Excel file to an older version when the file can no longer be opened. There are scenarios in which files become corrupted and can't be opens in Excel anymore. When this happens, users can try to restore their files to older versions. This is a workaround to prevent users from losing all their data.

Note: The Sfcdetails.txt file contains details from every time that the System File Checker tool has been run on the computer. The file includes information about files that were not repaired by the System File Checker tool. Verify the date and time entries to determine the problem files that were found the last time that you ran the System File Checker tool.

Note: If it’s been fewer than 10 days since you upgraded Windows, 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.

Use the Copilot connectivity troubleshooter when you are having difficulty connecting to Copilot. This will check for firewall rules or other blockers to your connection.

If you're not interested in trying the new Outlook for Windows just yet and don't want to be a part of this one-time switch, in classic Outlook go to File > Options> General > New Outlook options and uncheck Automatically switch me to new Outlook.. If you don't see this option, it means you're not currently eligible for an automatic switch to new Outlook for Windows at this time.

Important: Copilot in Outlook only supports work or school accounts, and Microsoft accounts using outlook.com, hotmail.com, live.com, and msn.com email addresses at this time. Email accounts from third-party email providers such as Gmail, Yahoo, and iCloud can use Outlook, but won't have access to Copilot features.

File information. For a list of the files that are provided in this update, download the file information for cumulative update.. Prerequisites. To apply this update, you must have .NET Framework 3.5 or 4.8.1 installed.

If multiple audio output devices are available, check that you have the appropriate one selected. Here's how: Select the Speakers icon on the taskbar.. Next, select the arrow to the right of the speaker volume slider to open a list of audio devices connected to your computer. The tool tip should display as Select a sound output when hovering over the arrow.

Microsoft Edge is the browser recommended by Microsoft. Support for Internet Explorer ended on June 15, 2022. If any site you visit needs Internet Explorer 11, you can reload it with Internet Explorer mode in Microsoft Edge.

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