Description of the security update for Microsoft Exchange Server 2019 and Exchange Server 2016: September 10, 2019

Applies to: Exchange Server 2019Exchange Server 2016

This update rollup is a security update that resolves vulnerabilities in Microsoft Exchange Server. To learn more about these vulnerabilities, see the following Common Vulnerabilities and Exposures (CVE) descriptions:

Known issues in this security update

  • When you try to manually install this security update by double-clicking the update file (.msp) to run it in Normal mode (that is, not as an administrator), some files are not correctly updated.

    When this issue occurs, you don’t receive an error message or any indication that the security update was not correctly installed. However, Outlook Web Access (OWA) and the Exchange Control Panel (ECP) may stop working. This issue occurs on servers that are using user account control (UAC). The issue occurs because the security update doesn’t correctly stop certain Exchange-related services.

    To avoid this issue, follow these steps to manually install this security update:

    1. Select Start, and type cmd.
    2. In the results, right-click Command Prompt, and then select Run as administrator.
    3. If the User Account Control dialog box appears, verify that the default action is the action that you want, and then select Continue.
    4. Type the full path of the .msp file, and then press Enter.

    This issue does not occur when you install the update through Microsoft Update.

  • Exchange services may remain in a disabled state after you install this security update. This condition does not indicate that the update is not installed correctly. This condition may occur if the service control scripts experience a problem when they try to return Exchange services to its usual state. To fix this issue, use Services Manager to restore the startup type to Automatic, and then start the affected Exchange services manually. To avoid this issue, run the security update at an elevated command prompt. For more information about how to open an elevated Command Prompt window, see Start a Command Prompt as an Administrator.

How to get and install the update

Method 1: Microsoft Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

You can get the standalone update package through the Microsoft Download Center.

More information

Security update deployment information

For deployment information about this update, see security update deployment information: September 10, 2019

Security update replacement information

This security update replaces the following previously released updates:

File information

File hash information

Update Name File name SHA1 hash SHA256 hash
Exchange Server 2019 Cumulative Update 2 Exchange2019-KB4515832-x64-en.msp 2B961A911BAAB828BCE94E5CA06EAE50F92E285E EAA85AA0B92A425BF149201883737A4AB4372574E2100035AC978B7A0B5CAAED
Exchange Server 2019 Cumulative Update 1 Exchange2019-KB4515832-x64-en.msp CDA232DCF13975F18E034CDF787AE59525F504FC 497E12324CD0629734E1916D3B7956C59608B745F27DEB912842A6A1BCAC7C74
Exchange Server 2016 Cumulative Update 13 Exchange2016-KB4515832-x64-en.msp 15F79B5F8AA331738821C88E9A7B48716C3D1C7F D70BFCB4F38593F026711A36386A720712DE68D32D789D2209F1C68525E22C43
Exchange Server 2016 Cumulative Update 12 Exchange2016-KB4515832-x64-en.msp 6055FA2B6D76FE218DD4D06E84EA06625218B93A B826661AF605A6B8FD864631EBE757B5D73C4F91F82452B61507409E7819D63A

Exchange server file information

The English (United States) version of this update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time together with your current daylight-saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

How to get help and support for this security update

Help for installing updates: Protect yourself online

Help for protecting your Windows-based computer from viruses and malware: Microsoft Security

Local support according to your country: International Support