Use a file compression utility. Using a compression utility, such as WinZip, creates a compressed archive file that has a different file name extension. Outlook doesn’t recognize these file name extensions as potential threats. Therefore, it doesn’t block the new attachment.

Repair an Outlook data file (.pst) file. Open SCANPST.EXE. Select Browse to select the Outlook Data File (.pst) you want to scan. If you need help locating your Outlook Data File, see Locating the Outlook Data Files. Note: By default, a new log file is created during the scan.

Note: The steps to install the 2019, 2016, or 2013 versions of Office Professional Plus, Office Standard, or a stand-alone app such as Word or Project might be different if you got Microsoft 365 through one of the following: Microsoft Workplace Discount Program (formerly known as Home Use Program): If you bought Microsoft 365 for personal use through your company, see Install Office through ...

The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 R2 and for Windows 7" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components.

Follow the recommendations in this article to troubleshoot sync issues in OneNote for Windows and macOS.

On the Developer tab, in the XML group, click Expansion Packs. Click Add. In the Install XML Expansion Packs dialog box, find the location of the manifest for the solution that you want to add. Click Open. In the Available XML expansion packs list, click the solution that you want to attach to your document, and then click Attach.

Scenario 1: You're missing a file, folder, or item from a list or library. Scenario 2: You've deleted a file or a folder and want to recover it. Scenario 3: Your library contains corrupted versions of files that you cannot open, and you want to recover working versions of the files.

The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 7 and for Windows Server 2008 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component.

After attempting to install Microsoft Dynamics CRM 2013 Report Authoring Extensions, an error is received after installing the Windows Live ID Sign-In Assistant pre-requisite: Microsoft Dynamics CRM Report Authoring Extension Setup. Action Microsoft.Crm.Setup.Common.Analyzer+CollectAction failed.

How to troubleshoot Outlook when search isn’t working (returning no results, incomplete results, can’t find older emails, and more).