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Use the System File Checker tool to repair missing or corrupted system ...
If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track.
Determine whether your computer is running a 32-bit version or 64-bit ...
Use the 32-bit installer if you’re using a 32-bit version of Windows and the 64-bit installer with a 64-bit version of Windows. To determine which version of Windows you’re using, follow the steps in Method 1 or 2. If one method doesn’t work, try the other.
Applies To: Skype for Business Online operated by 21Vianet
Choose between the 64-bit, 32-bit, and ARM version of OneDrive
If you're not sure which OneDrive version is better for you, you can review the reasons to choose the 64-bit version, the 32-bit version, ARM64 version for Windows, or the Apple silicon version for Mac. If you know what version you want, you can learn how to install it.
Applies To: OneDrive (home or personal), OneDrive for Mac, OneDrive for Windows
Recovery options in Windows - Microsoft Support
Your PC isn't working well and you recently installed an app. Restore from a system restore point. You suspect your device has been infected. Use installation media to reinstall Windows 11. Select one of the recovery options below and follow the steps to try to get things working again.
Use the Office offline installer - Microsoft Support
Select the Microsoft 365 folder from the virtual drive and then double-click either the Setup32.exe to install the 32-bit version of Microsoft 365, or Setup64.exe to install the 64-bit version to begin the offline installation. If you're not sure which version is right for you, see Choose the 64-bit or 32-bit version of Office.
Applies To: Office 2021, Office 2019, Office 2016, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Office 365 operated by 21Vianet - Admin, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Windows Installer 4.5 is available - Microsoft Support
For 64-bit: Windows6.0-KB942288-v2-x64.msu. For IA64 Platform: Windows6.0-KB942288-v2-ia64.msu. Installation of the Windows Installer 4.5 package requires a reboot to successfully update the required binaries. For more information, view How to obtain Microsoft support files from online services.
“Office (64-bit or 32-bit) couldn’t be installed” error when trying to ...
To fix this error and switch from 32-bit to 64-bit (or vice-versa), you must do the following in this order. Go to Uninstall Office from a PC and follow the steps to uninstall the version of Office (or stand-alone Office application, such as Visio or Project) you don't want.
Applies To: Office 2021, Office 2019, Office 2016, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Office 365 operated by 21Vianet - Admin, Click2Run, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Description of the security update for Office 2016: May 9, 2017
Summary. This security update resolves vulnerabilities in Microsoft Office that could allow remote code execution if a user opens a specially crafted Office file. To learn more about these vulnerabilities, see Microsoft Common Vulnerabilities and Exposures CVE-2017-0261 and Microsoft Common Vulnerabilities and Exposures CVE-2017-0262.
How to manually download the latest antimalware definition updates for ...
Explains how to download the latest antimalware definition updates for Microsoft Forefront Client Security, Microsoft Forefront Endpoint Protection 2010 or Microsoft System Center 2012 Endpoint Protection without installing Microsoft Windows Server Update Services (WSUS).
How to use the Regsvr32 tool and troubleshoot Regsvr32 error messages
Regsvr32 is a command-line utility to register and unregister OLE controls, such as DLLs and ActiveX controls in the Windows Registry. Regsvr32.exe is installed in the %systemroot%\System32 folder in Windows XP and later versions of Windows. The 64-bit version is %systemroot%\System32\regsvr32.exe.