{"id":90372,"date":"2021-11-23T05:35:08","date_gmt":"2021-11-23T05:35:08","guid":{"rendered":"https:\/\/www.stellarinfo.com\/blog\/?p=90372"},"modified":"2023-03-16T09:01:42","modified_gmt":"2023-03-16T09:01:42","slug":"install-security-update-on-exchange-server-2016-cu22","status":"publish","type":"post","link":"https:\/\/www.stellarinfo.com\/blog\/install-security-update-on-exchange-server-2016-cu22\/","title":{"rendered":"How to Install Security Update on Exchange Server 2016 CU22"},"content":{"rendered":"<?xml encoding=\"utf-8\" ?><?xml encoding=\"utf-8\" ?><p>Microsoft has released critical security updates to patch a remote code execution vulnerability CVE-2021-42321 found in Exchange 2016 (CU22) and 2019 (CU10, CU11, CU21). The November 2021 security updates are available for the following Exchange Server builds,<\/p><ul class=\"wp-block-list\">\n<li>Exchange Server 2013&nbsp;<a href=\"https:\/\/www.microsoft.com\/en-us\/download\/details.aspx?familyID=8ef4e237-7007-4e30-9525-75ae6e66bb41\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">CU23<\/a><\/li>\n\n\n\n<li>Exchange Server 2016&nbsp;<a href=\"https:\/\/www.microsoft.com\/en-us\/download\/details.aspx?familyID=de4b96e0-8d0e-4830-8354-7ed2128e6f82\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">CU21<\/a>&nbsp;and&nbsp;<a href=\"https:\/\/www.microsoft.com\/en-us\/download\/details.aspx?familyID=688b79c6-7e43-4332-848d-47e88f60818c\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">CU22<\/a><\/li>\n\n\n\n<li>Exchange Server 2019&nbsp;<a href=\"https:\/\/www.microsoft.com\/en-us\/download\/details.aspx?familyID=1c42658f-9d60-4afb-a6c6-e35594b17d39\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">CU10<\/a>&nbsp;and&nbsp;<a href=\"https:\/\/www.microsoft.com\/en-us\/download\/details.aspx?familyID=cd28ac6e-eb6f-4747-b9f0-24785b08a012\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">CU11<\/a><\/li>\n<\/ul><p>The vulnerability affects the on-premises Exchange Servers, including Hybrid Exchange. If your organization is running on earlier CU, we recommend you upgrade to the latest CU immediately to patch your server and continue receiving the latest Security Updates.<\/p><p>However, some users who upgraded to Exchange Server 2016 CU22 and installed the security patches released for CU22 reported failed installation issues. In such cases, you can&rsquo;t roll back to the previous version and require to set up a new server if the problem is not fixed.<\/p><p>In this blog, we have discussed steps to install the CU22 and November 2021 security updates on Exchange Server 2016 correctly and avoid post-install issues or failed update scenarios that can render the server unusable.<\/p><h2 class=\"wp-block-heading\" id=\"steps-to-install-exchange-2016-server-updates\">Steps to Install Exchange 2016 Server Updates<\/h2><p>To install Cumulative Update 22 (CU22) and November 2021 Security Updates on your Exchange Server 2016, follow these steps,<\/p><div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"997\" height=\"281\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/installing-cumulative-updates-exchange-1.jpg\" alt=\"Stellar\" class=\"wp-image-90374 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/installing-cumulative-updates-exchange-1.jpg 997w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/installing-cumulative-updates-exchange-1-300x85.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/installing-cumulative-updates-exchange-1-768x216.jpg 768w\" sizes=\"auto, (max-width: 997px) 100vw, 997px\" \/><figcaption class=\"wp-element-caption\">Image Source &ndash; Microsoft<\/figcaption><\/figure>\n<\/div><h3 class=\"wp-block-heading\" id=\"h-step-1-download-the-exchange-server-cu22-build\">Step 1: Download the Exchange Server CU22 Build<\/h3><p>You can directly upgrade to CU22 from RTM or CU1 build. But before downloading the CU22 build, check your current CU by running the following command in Exchange Management Shell<\/p><p>Get-ExchangeServer | fl Name,Edition,AdminDisplayVersion<\/p><p>Then visit <a href=\"https:\/\/docs.microsoft.com\/en-us\/exchange\/new-features\/build-numbers-and-release-dates?view=exchserver-2019\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">this page<\/a> to download the Exchange Server 2016 CU22 update and mount the downloaded ISO.<\/p><h3 class=\"wp-block-heading\" id=\"h-step-2-prepare-server-for-upgrade\">Step 2: Prepare Server for Upgrade<\/h3><p>To install Exchange Server CU22 correctly and prevent issues after upgrading, install the pre-requisites and prepare the server for CU22 upgrade.<\/p><h4><ul><li>Install .NET 4.8 framework<\/li><ul><\/ul><\/ul><\/h4><p>Download and install <a href=\"https:\/\/dotnet.microsoft.com\/download\/dotnet-framework\/net48\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">.NET 4.8 framework<\/a> on your Exchange Server 2016.<\/p><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"509\" height=\"474\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/install-net-framwework-exchange-pre-requisites-cumulative-update-2.png\" alt=\"Stellar\" class=\"wp-image-90375 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/install-net-framwework-exchange-pre-requisites-cumulative-update-2.png 509w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/install-net-framwework-exchange-pre-requisites-cumulative-update-2-300x279.png 300w\" sizes=\"auto, (max-width: 509px) 100vw, 509px\" \/><\/figure><h4><ul><li> Install IIS URL Rewrite Module 2.1<\/li><ul><\/ul><\/ul><\/h4><p>Starting September 2021, Exchange Server 2016 CU22 requires the IIS URL Rewrite module for Microsoft Exchange Emergency Mitigation Service. Download and install the <a href=\"https:\/\/download.microsoft.com\/download\/1\/2\/8\/128E2E22-C1B9-44A4-BE2A-5859ED1D4592\/rewrite_amd64_en-US.msi\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">IIS URL Rewrite Module v2<\/a>.1 on your Exchange Server 2016. Reboot the server after installing the IIS URL Rewrite module.<\/p><h4><ul><li>Prepare the Schema<\/li><ul><\/ul><\/ul><\/h4><p>To prepare the Schema, open Command Prompt as administrator and navigate the <strong>mount<\/strong> location using the &lsquo;cd&rsquo; command. For instance, cd F:<\/p><p>Then run the following command to prepare the Schema,<\/p><p>\\Setup.exe \/IAcceptExchangeServerLicenseTerms_DiagnosticDataOff \/PrepareSchema<\/p><figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"218\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/prepareschema-3-1024x218.png\" alt=\"Stellar\" class=\"wp-image-90376 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/prepareschema-3-1024x218.png 1024w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/prepareschema-3-300x64.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/prepareschema-3-768x164.png 768w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/prepareschema-3.png 1366w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><h4 class=\"wp-block-heading\" id=\"h-prepare-active-directory\"><ul><li>Prepare Active Directory<\/li><\/ul><\/h4><p>To prepare Active Directory for CU22 upgrade, run the following command in elevated Command prompt window,<\/p><p>\\Setup.exe \/IAcceptExchangeServerLicenseTerms_DiagnosticDataOff \/PrepareAD<\/p><figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/preparead-4-1024x576.png\" alt=\"Stellar\" class=\"wp-image-90377 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/preparead-4-1024x576.png 1024w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/preparead-4-300x169.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/preparead-4-768x432.png 768w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/preparead-4.png 1366w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><h4><ul><li>Prepare All Domains<\/li><\/ul><\/h4><p>To prepare all domains, run the following command in Command Prompt as administrator,<\/p><p>\\Setup.exe \/IAcceptExchangeServerLicenseTerms_DiagnosticDataOff \/PrepareAllDomains<\/p><figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"356\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/preparealldomains-5-1024x356.png\" alt=\"Stellar\" class=\"wp-image-90378 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/preparealldomains-5-1024x356.png 1024w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/preparealldomains-5-300x104.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/preparealldomains-5-768x267.png 768w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/preparealldomains-5.png 1340w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><p>Reboot the server.<\/p><h3 class=\"wp-block-heading\" id=\"h-step-3-put-the-exchange-server-in-maintenance-mode\">Step 3: Put the Exchange Server in Maintenance Mode<\/h3><p>To put your Exchange Server 2016 into maintenance mode for CU22 upgrade, run the following commands in Exchange Management Shell as administrator,<\/p><p>Set-ServerComponentState -Identity &ldquo;ServerName&rdquo; -Component HubTransport -State Draining -Requester Maintenance<\/p><p>The command sets the HubTransport component in the draining state.<\/p><p>Set-ServerComponentState &ldquo;ServerName&rdquo; -Component ServerWideOffline -State Inactive -Requester Maintenance<\/p><p>The command puts the server into maintenance mode. To verify the server is in maintenance mode, run the following command,<\/p><p>Get-ServerComponentState &ldquo;ServerName&rdquo; | Select Component, State<\/p><h3 class=\"wp-block-heading\" id=\"h-step-4-install-exchange-server-2016-cu22\">Step 4: Install Exchange Server 2016 CU22<\/h3><p>Now you are ready to install and upgrade the Exchange Server 2016 to CU22 build. You can launch the Setup.exe from the mount location to upgrade using the graphical user interface (GUI).<\/p><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"809\" height=\"707\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/installing-cumulative-update-6.png\" alt=\"Stellar\" class=\"wp-image-90379 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/installing-cumulative-update-6.png 809w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/installing-cumulative-update-6-300x262.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/installing-cumulative-update-6-768x671.png 768w\" sizes=\"auto, (max-width: 809px) 100vw, 809px\" \/><\/figure><p>You may also use elevated Command Prompt window to install the CU22 in unattended mode using the following command,<\/p><p>&lt;MountDriveLetter&gt;\\setup.exe \/m:upgrade \/IAcceptExchangeServerLicenseTerms_DiagnosticDataON<\/p><p>For instance,<\/p><p>F:\\ setup.exe \/m:upgrade \/IAcceptExchangeServerLicenseTerms_DiagnosticDataON<\/p><p>After the installation, remove the server from maintenance mode using the following command,<\/p><p>Set-ServerComponentState &ldquo;ServerName&rdquo; &ndash;Component ServerWideOffline &ndash;State Active &ndash;Requester Maintenance<\/p><p>Run following command in EMS to verify the server is out of maintenance mode,<\/p><p>Get-ServerComponentState<\/p><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"554\" height=\"444\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/exchnage-maintenance-mode-7.png\" alt=\"Stellar\" class=\"wp-image-90380 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/exchnage-maintenance-mode-7.png 554w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/exchnage-maintenance-mode-7-300x240.png 300w\" sizes=\"auto, (max-width: 554px) 100vw, 554px\" \/><\/figure><p>Then restart the server and install the November 2021 Security Updates.<\/p><h3 class=\"wp-block-heading\" id=\"h-step-5-install-november-2021-security-updates-to-cu22\">Step 5: Install November 2021 Security Updates to CU22<\/h3><p>Download the November 2021 Security Updates released for Exchange Server 2016 <a href=\"https:\/\/www.microsoft.com\/en-us\/download\/details.aspx?familyID=688b79c6-7e43-4332-848d-47e88f60818c\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">CU22<\/a> build and follow these steps to install them,<\/p><ul class=\"wp-block-list\">\n<li>Open the Command Prompt as administrator and navigate to the location using the &lsquo;cd&rsquo; command where security updates are downloaded. For instance,<\/li>\n<\/ul><p>cd C:\\Users\\Administrator\\Downloads\\<\/p><ul class=\"wp-block-list\">\n<li>Then run following command to start installing the security updates,<\/li>\n<\/ul><p>.\\UpdateFileName.msp<\/p><p>Or .\\Exchange2016-KB5007409-x64-en.msp<\/p><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"990\" height=\"538\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/install-security-updates-exchange-server-8.png\" alt=\"Stellar\" class=\"wp-image-90381 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/install-security-updates-exchange-server-8.png 990w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/install-security-updates-exchange-server-8-300x163.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/11\/install-security-updates-exchange-server-8-768x417.png 768w\" sizes=\"auto, (max-width: 990px) 100vw, 990px\" \/><\/figure><ul class=\"wp-block-list\">\n<li>Click &lsquo;<strong>Open<\/strong>&lsquo; and then follow the wizard to install the security updates.<\/li>\n<\/ul><h3 class=\"wp-block-heading\" id=\"h-step-6-run-healthchecker-script\">Step 6: Run HealthChecker Script<\/h3><p>HealthChecker.ps1 is a PowerShell script that helps you identify issues and vulnerabilities on your server. It helps you check the server&rsquo;s health and patch your server against the new threat by providing detailed information. To run the HealthChecker.ps1 script, download the PowerShell script and then follow these steps,<\/p><ul class=\"wp-block-list\">\n<li>Open Command Prompt as administrator<\/li>\n\n\n\n<li>Run the following command,<\/li>\n<\/ul><p>.\\HealthChecker.ps1 &ndash;BuildHtmlServersReport<\/p><ul class=\"wp-block-list\">\n<li>&nbsp;This creates an HTML report at the same location where the script is located. Open the HTML report to check the server&rsquo;s health. Fix the issues and patch the vulnerabilities if found.<\/li>\n<\/ul><h2 class=\"wp-block-heading\" id=\"conclusion\">Conclusion<\/h2><p>Before installing Exchange Server Security and Cumulative Updates, check the pre-requisites and Known issues listed on the KB pages. Also, install the builds on a test Exchange Server machine. It will help you identify and fix issues before deploying them to the production server.<\/p><p>However, if the update fails, it can render the server unusable and require setting up a new Exchange Server. This can lead to extended downtime, especially when you don&rsquo;t have a backup. In such cases, you can rely on Exchange recovery software, such as <a href=\"https:\/\/www.stellarinfo.com\/edb-exchange-server-recovery.htm\" target=\"_blank\" rel=\"noreferrer noopener\">Stellar Repair for Exchange<\/a>, to recover mailboxes from failed servers and export them to your newly set up Exchange Server directly. If you have any questions or need more help related to updating or recovering failed Exchange Server, leave a comment down below.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Microsoft has released critical security updates to patch a remote code execution&hellip; <a class=\"more-link\" href=\"https:\/\/www.stellarinfo.com\/blog\/install-security-update-on-exchange-server-2016-cu22\/\">Continue reading <span class=\"screen-reader-text\">How to Install Security Update on Exchange Server 2016 CU22<\/span><\/a><\/p>\n","protected":false},"author":32,"featured_media":90383,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[25],"tags":[2355],"class_list":["post-90372","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-exchange-server","tag-install-security-update-on-exchange-server","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Install Security Update on Exchange Server 2016 CU22<\/title>\n<meta name=\"description\" content=\"In this bog we have discussed how to install exchange Server 2016 CU22 update and November 2021. Earlier In september 2021 exchange server 2016 cumulative update 22 or CU22 was released.introducing Microsoft Exchange Emergency Mitigation Service, a built-in version of the EOMT tool to mitigate risks and newer threats.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.stellarinfo.com\/blog\/install-security-update-on-exchange-server-2016-cu22\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Install Security Update on Exchange Server 2016 CU22\" \/>\n<meta property=\"og:description\" content=\"In this bog we have discussed how to install exchange Server 2016 CU22 update and November 2021. 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