The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs. It also fixes corrupted registry keys. First, you'll need to download the troubleshooter. Download troubleshooter. If you see the File Download box when you start downloading, select Run or Open.

Data files. Repair Outlook Data Files (.pst and .ost) Outlook for Microsoft 365 Outlook 2021 Outlook 2019 Outlook 2016. Guided support in your browser can provide digital solutions for Office problems. Try guided support. You can use the Inbox Repair tool (SCANPST.EXE) to diagnose and repair errors in your Outlook data file.

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.

Describes how to troubleshoot problems that occur when you install, uninstall, or upgrade a program on a Windows-based computer by using Windows Installer.

Use the Office offline installer to install Office 2016 or Office 2013 if you don't have an active Internet connection or you're having problems with slow speed or unreliable connections.

From the Overview page, select Office apps and on that page, find the Microsoft 365 product you want to install and select Install. To install Microsoft 365 in a different language, or to install the 64-bit version, use the dropdown to find more options. Choose the language and bit version you want, and then select Install.

Summary. Security updates released on and after July 6, 2021 contain protections for a remote code execution vulnerability in the Windows Print Spooler service ( spoolsv.exe) known as “PrintNightmare”, documented in CVE-2021-34527. After installing the July 2021 and later updates, non-administrators, including delegated admin groups like ...

Restart new Outlook. Right-click Start and select Task Manager. Select Microsoft Outlook, then End task. Check to make sure that new Outlook is closed, then close Task Manager. After new Outlook closes, reopen the app as you normally would. Uninstall and reinstall the new Outlook for Windows. To uninstall new Outlook:

Method 1: Unregister and re-register Windows Installer. Method 2: Verify the DCOM permissions. Method 3: Give Full Control permission to the SYSTEM account. Method 4: Verify the registry permissions. Method 5: Fix the broken security key for the MsiServer service. Before you begin: Verify that the service pack is installed.

Select Install (or depending on your version, Install apps> ). From the home page select Install apps (If you set a different start page, go to aka.ms/office-install .) For Microsoft 365 operated by 21 Vianet go to login.partner.microsoftonline.cn/account. For Microsoft 365 Germany go to portal.office.de/account.