Microsoft Exchange Server 2019 CU9

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Microsoft Exchange Server 2019 CU9 | 1.4 Gb

The Microsoft development team is pleased to announce the availability of Cumulative Update 9 to Exchange Server 2019. This update includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues. This update also resolves vulnerabilities CVE-2021-26412, CVE-2021-27078, CVE-2021-26854, CVE-2021-26855, CVE-2021-27065, CVE-2021-26857, CVE-2021-26858.

This update also includes new daylight saving time (DST) updates for Exchange Server 2019.

Exchange Server 2019 CU9 Build 15.02.0858.005 - Release date: March 16, 2021.

Issues that this cumulative update fixes
This cumulative update also fixes the issues that are described in the following Microsoft Knowledge Base articles:
- 5001181 Certain search scenario can't return expected result in Outlook online mode in Exchange Server 2019
- 5001182 Can't use keyword "TMM" in a special pattern to search email in Exchange Server 2019
- 5001183 Attachment is treated as bad zip file on Edge Transport server in Exchange Server 2019 and 2016
- 5001184 EAC has no option to select the correct tenant for an Office 365 mailbox in Exchange Server 2019 and 2016
- 5001185 EAC has no option to select an archive domain for cloud-based archive in Exchange Server 2019 and 2016
- 5001186 Encoding of special characters isn't preserved which causes missing text in Outlook in Exchange Server 2019 and 2016
- 5001188 Incorrect MRM properties stamped on mail item delivery when sending to multiple mailboxes on the same database in Exchange Server 2019 and 2016
- 5001189 Mailbox Audit log searches and Outlook both tied to MaxHitsForFullTextIndexSearches in Exchange Server 2019 and 2016
- 5001190 MonitoringGroup can't control the placement of CAS monitoring mailboxes in Exchange Server 2019 and 2016
- 5001192 Microsoft Teams fails to show calendar because Autodiscover v2 isn't site-aware in Exchange Server 2019 and 2016
- 5001193 New health mailboxes for databases are created every time Exchange Health Manager service is restarted
- 5001194 RFC certificate timestamp validation in Exchange Server 2019 and 2016
- 5001195 UPN specified when creating mailbox is overwritten automatically causing login failures in Exchange Server 2019 and 2016
- 5000631 Event IDs 1003, 1309 and 4999 are logged after installing Exchange Server 2019 CU8
- 4583558 PDF preview function in OWA leads to download action unexpectedly

Exchange Server 2019is designed to deliver security, performance and improved administration and management capabilities; attributes our largest on-premises customers expect from Exchange.

Security:Exchange Server 2019 requires Windows Server 2019. In fact, we recommend installing Exchange Server 2019 onto Windows Server 2019 Server Core. Exchange Server 2019 installed on Windows Server 2019 Core provides the most secure platform for Exchange. You also have the option of installing Exchange 2019 onto Windows Server 2019 with Desktop Experience, but we have worked hard to make sure running Exchange on Server Core is the best choice for our code.

We're aware all media for Windows Server 2019 and Windows Server, version 1809 has been temporarily removed and Microsoft will provide an update when refreshed media is available. Exchange Server 2019 will be fully compatible with version 1809, and the refreshed version.

We also built Exchange Server 2019 to only use TLS 1.2 out of the box, and to remove legacy ciphers and hashing algorithms.

We've done significant work to allow Exchange Server to take advantage of larger core and memory packed systems available in market today. With our improvements, Exchange Server can use up to 48 processor cores and 256GB of RAM.

We've re-engineered search using Bing technology to make it even faster and provide better results, and in doing so have made database failovers much faster, and administration easier.

We're adding dual storage read/write capabilities to Exchange Server 2019 using Solid State Drive (SSD) technology to provide a super-fast cache of key data for improving end user experience. We also talked about this in our Email Search in a Flash! Accelerating Exchange 2019 with SSDs session at Ignite.

We also changed the way database caching works to allocate more memory to active database copies, again improving the end user experience. You can learn more about Dynamic Database Cache from Welcome to Exchange Server 2019! video and slides.

The improvements we have made to Exchange Server 2019 will enable you to scale to a larger number of users per server than ever before, use much larger disks, and see the latency of many client operations being cut in half.

We all rely on Exchange for calendaring, and we know large enterprises are heavy calendar users. We are bringing a few key features such as restricting the forwarding of meeting requests and better control over OOF settings to Exchange Server 2019. Administrators get some new calendaring features too, as we're adding the ability to manage events on user's calendars and assign delegate permissions more easily.

We are also adding support for routing mail to and from EAI/IDN recipients and hope to add additional capabilities in this area in the future.

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Product:Microsoft Exchange Server
Version:2019 CU9 Build 15.02.0858.005
Supported Architectures:x64
Website Home Page :

http://www.microsoft.com]www.microsoft.com

Language:multilanguage
System Requirements:PC *
Size:1.4 Gb

IMPORTANT: This regularly scheduled cumulative update contains all the security fixes of the security updates in March and other previous security updates.

Processor- Intel processor that supports Intel 64 architecture
- AMD processor that supports the AMD64 platform
Memory- Mailbox role: at least 128GB is recommended
- Edge Transport role: at least 64GB is recommended
Exchange Server 2019 supports up to 256 GB RAM
Paging file size25% of installed memory is recommended (e.g. for 64GB RAM use 16GB page file)
Disk spaceAt least 30GB of free space on the drive where you're installing Exchange
- At least 200MB of free space on the system drive
- At least 500MB on the drive containing the message queue database
Screen resolution1024 x 768 pixels (XGA) or higher
File systemNTFS is required on partitions that contain the following types of files:
- The System partition
- Exchange binaries
- Files generated by Exchange diagnostic logging
- Transport database files (for example, the mail queue database)
Optionally, you can use ReFS on the partitions that contain the following types of files:
- Mailbox databases and transaction logs.

NOTE: Microsoft doesn't support Exchange 2019 on Intel Itanium IA64 processors and recommends up to 2 processor sockets on a physical computer.

Software Prerequisites:
Microsoft encourages installing Exchange Server 2019 on a server running Windows Server Core, but you can't run Exchange Server 2019 on a nano server.

Exchange Server 2019 Requirement:
Mailbox and Edge Transport server roles
- Windows Server 2019 Standard or Datacenter
Management tools
- Windows Server 2019 Standard or Datacenter
- Windows 10 64-bit

Download link:

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