Legacy Update: Get back online, activate, and install updates on your legacy Windows PC

Files

Status: Live This download is still available on microsoft.com. The downloads below will come directly from the Microsoft Download Center.

Files
Exchange Server 2019 (KB5066371) Hash Table.docx Size: 17 KB
Exchange2019-KB5066371-x64-de.exe Size: 407.27 MB
Exchange2019-KB5066371-x64-en.exe Size: 407.27 MB
Exchange2019-KB5066371-x64-es.exe Size: 407.27 MB
Exchange2019-KB5066371-x64-fr.exe Size: 407.27 MB
Exchange2019-KB5066371-x64-it.exe Size: 407.27 MB
Exchange2019-KB5066371-x64-ja.exe Size: 407.27 MB
Exchange2019-KB5066371-x64-ko.exe Size: 407.27 MB
Exchange2019-KB5066371-x64-pt.exe Size: 407.27 MB
Exchange2019-KB5066371-x64-ru.exe Size: 407.27 MB
Exchange2019-KB5066371-x64-zh-hans.exe Size: 407.27 MB
Exchange2019-KB5066371-x64-zh-hant.exe Size: 407.27 MB

File sizes and hashes are retrieved from the Wayback Machine’s indexes. They may not match the latest versions of files hosted on Microsoft servers.

For information about Exchange 2019 system requirements and prerequisites, see the following topics:

• Exchange 2019 System Requirements
• Exchange 2019 Prerequisites

Actual requirements will vary based on system configuration. For more detailed system requirements, please refer to the Exchange Server 2019 Technical Documentation Library.

1. To start the download, select the Download button, and then do one of the following:
   • a. To start the installation immediately, temporarily disable any anti-virus software and then select Run.
   • b. To copy the download file to your computer for installation at a later time, select Save.
2. Temporarily disable any anti-virus software before starting the installation.
3. After the installation is completed, re-enable the antivirus software, and then restart your computer.
   (The installation program may prompt you to restart. We strongly recommend that you restart the computer even if you are not prompted to do this.)

If problems occur during or after the installation, please see Fix failed Exchange Server updates and run the Exchange Server Health Checker tool. Check Exchange Team Blog for latest news on updates. Microsoft Support is available for any persistent problems.

1. File Name: Exchange2019-KB5066371-x64-de.exe
   Language: German (de-de)
   SHA 256: F3BF0FED522772A947202BC330461317185A23D38A41426699066DD0493BF66D
2. File Name: Exchange2019-KB5066371-x64-en.exe
   Language: English (en-us)
   SHA 256: A37029FE8E17D3CEFF90A5853A91A266680B832CF66FE746BECC3D1AB9483353
3. File Name: Exchange2019-KB5066371-x64-es.exe
   Language: Spanish (es-es)
   SHA 256: BE9CDB730632B22F14D255ABCE86B483ED489AB190BD00A3D75F9AD93832B859
4. File Name: Exchange2019-KB5066371-x64-fr.exe
   Language: French (fr-fr)
   SHA 256: 9B5966E7AC7E6DF2CDFAE8BDC90B03D15CDC22CF1F9615B9A9D87F8C64AEFC76
5. File Name: Exchange2019-KB5066371-x64-it.exe
   Language: Italian (it-it)
   SHA 256: B1A20B1ABD998968D4B4C1DDDBA1097F06620C7246F2838C5D791C108BD011AB
6. File Name: Exchange2019-KB5066371-x64-ja.exe
   Language: Japanese (ja-jp)
   SHA 256: 481D3CE39036EC92C168F8C4ACB58B7D60E96ED8384AE3626CE134A08B39786F
7. File Name: Exchange2019-KB5066371-x64-ko.exe
   Language: Korean (ko-kr)
   SHA 256: FD703582D73C978F79CAD11BCDA732C1C90EDAA9740D0FA3ADCABF2517784D91
8. File Name: Exchange2019-KB5066371-x64-pt.exe
   Language: Portuguese-Brazil (pt-br)
   SHA 256: A125B57ECD106975015D2F9F7E52B458CA4C4FFFD6F63CB9E096510A0E33805A
9. File Name: Exchange2019-KB5066371-x64-ru.exe
   Language: Russian (ru-ru)
   SHA 256: 3FEFF7317986B210A9276B081C502A6B1E65B5CB1BF89D244A5B70DB59A657FD
10. File Name: Exchange2019-KB5066371-x64-zh-hans.exe
    Language: Chinese-China (zh-cn)
    SHA 256: 88C2124930E9B044AC3175F43DAE60BA232275B81F35CC12E59B8B115BAE32F8
11. File Name: Exchange2019-KB5066371-x64-zh-hant.exe
    Language: Chinese-Taiwan (zh-tw)
    SHA 256: 0591EB36CA2724F2415A83890C39D40096C164AD976D7D450740FE0DCDB4242F