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Abstract
IBM WebSphere Application Server Version 8.5.5.27 update install repositories for all platforms.
Download Description
Notice: Please read the important security-related information included in this document in the section and Regression List for changes with negative effects.
WebSphere Application Server 8.5.5.27 update install repository is provided as below:
- WebSphere Application Server traditional
- WebSphere Application Server Supplements
- Application Client
- Web server plug-ins
- Pluggable Application Client
- IBM HTTP Server
- WebSphere Customization Toolbox
- IBM Edge Components
See 25.0.0.1 download page for Liberty download links and information.
What's new
Serviceability and Usability enhancements included in 8.5.5.27:
| APAR | Description |
|---|---|
| PH61601 | Trace when the session timeout has been overridden by web.xml |
| PH62307 | Use J9 javadump api for thread dumps when available |
| PH62653 | ConnGetConnectionLogic=all does not print anything in trace log |
| PH62889 | Instrument additional apache processing hooks for %{rh}e |
Prerequisites
Version 8.5.0.x or 8.5.5.x must be installed prior to installing 8.5.5.27.
More Information
To check for status of the product and service repositories for Installation Manager, see this .
Installation Instructions
Download and install updated Installation Manager from the .
When using the "Download Links" below, single-file downloads can be used directly as IBM Installation Manager repositories. Multi-file downloads with "part<n>
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Download Package
. Use properly registered IDs to download fixes for WebSphere Application Server.
To verify a release package, you must obtain the public key. For more information, see Verifying WebSphere Application Server release packages.
WebSphere Application Server traditional
| Download Description | Platform | Download Links (Fix Central) |
|---|---|---|
| Application Server local repository ZIP files for Base, Express, ND, Developers, NDDMZ (Default with Java SDK 8) | Distributed | 8.5.5-WS-WAS-FP027-part1.zip & 8.5.5-WS-WAS-FP027-part2.zip & 8.5.5-WS-WAS-FP027-part3.zip |
| Application Server local repository ZIP files for Base, Express, ND, Developers, NDDMZ (Default with Java SDK 8) | Linux PPC64LE | 8.5.5-WS-WAS-LE-FP027-part1.zip & 8.5.5-WS-WAS-LE-FP027-part2.zip |
| Application Server for z/OS local repository ZIP file (includes NDDMZ for z/OS) | z/OS | 8.5.5-WS-WAS-OS390-FP027-part1.zip & 8.5.5-WS-WAS-OS390-FP027-part2.zip |
| Web Enablement for IBM i local repository ZIP file | IBM i | 8.5.5-WS-WEBENAB-FP027.zip |
Portable Installation Manager installs for z/OS
| Download Description | Platform | Download Links (Fix Central) |
|---|---|---|
| Application Server (includes IBM HTTP Server and Web Server plugins) | z/OS | was-zos-8.5.5.27.pax.Z |
WebSphere Application Server Supplements
| Download Description | Platform | Download Links (Fix Central) |
|---|---|---|
| Supplements local repository ZIP files containing Application Client, Web server plug-ins, Pluggable Application Client, IBM HTTP Server | Distributed | 8.5.5-WS-WASSupplements-FP027-part1.zip & 8.5.5-WS-WASSupplements-FP027-part2.zip & 8.5.5-WS-WASSupplements-FP027-part3.zip |
| Supplements local repository ZIP files containing Application Client, Web server plug-ins, IBM HTTP Server | Linux PPC64LE | 8.5.5-WS-WASSupplements-LE-FP027-part1.zip & 8.5.5-WS-WASSupplements-LE-FP027-part2.zip |
| Distributed | 8.5.5-WS-WCT-FP027-part1.zip & 8.5.5-WS-WCT-FP027-part2.zip | |
| WebSphere Customization Toolbox local repository ZIP files | Linux PPC64LE | 8.5.5-WS-WCT-LE-FP027-part1.zip & 8.5.5-WS-WCT-LE-FP027-part2.zip |
| IBM HTTP Server for z/OS local repository ZIP file | z/OS | 8.5.5-WS-IHS-OS390-FP027.zip |
| Web server plug-ins for z/OS local repository ZIP file | z/OS | 8.5.5-WS-PLG-OS390-FP027.zip |
| Download Description | Platform | Download Links (Fix Central) |
|---|---|---|
| IBM WebSphere Edge Load Balancer for IPv4 and IPv6 local repository ZIP file | Distributed, Linux PPC64LE | 8.5.5-WS-EDGEULB-FP027-part1.zip & 8.5.5-WS-EDGEULB-FP027-part2.zip |
| IBM WebSphere Edge Components Caching Proxy local repository ZIP file | Distributed | 8.5.5-WS-EDGECP-FP027.zip |
Known Side Effects
WebSphere Application Server traditional
Please refer to Regression List for changes with negative effects.
- 8.5.5.27
- Changes in outbound TLS certificate hostname validation
- For customers using mixed JDK environment, jvms running on JDK lower than 8.0.8.0 might be unable to open PKCS12 keystores due to an UnrecoverableKeyException after dmgr updates the keystore files: Unable to open PKCS12 keystores due to an UnrecoverableKeyException
- 8.5.5.26
- MQDefaultSSLConfig ignored in 8.5.5.26
- For customers using mixed JDK environment, jvms running on JDK lower than 8.0.8.0 might be unable to open PKCS12 keystores due to an UnrecoverableKeyException after dmgr updates the keystore files: Unable to open PKCS12 keystores due to an UnrecoverableKeyException
- 8.5.5.25
- For customers using mixed JDK environment, jvms running on JDK lower than 8.0.8.0 might be unable to open PKCS12 keystores due to an UnrecoverableKeyException after dmgr updates the keystore files: Unable to open PKCS12 keystores due to an UnrecoverableKeyException
- 8.5.5.24
- WebSphere WebServer Plug-in: WebSphere web server plug-in changes to certificate hostname validation
- IBM HTTP Server: SSL ciphers using RSA key exchange are no longer enabled by default
- IBM HTTP Server: Configurations with SSLFIPSEnable and RSA Key Exchange based ciphers explicitly added will fail with SSL0212E if these ciphers are actually negotiated. RSA Key Exchange ciphers should not be added to a FIPS enabled configuration.
Failure to start the server if Java 2 Security is enabled with the following cause:
Caused by: java.security.ProviderException: Access denied ("java.util.PropertyPermission" "java.home" "read") at com.ibm.crypto.plus.provider.IBMJCEPlus.e(IBMJCEPlus.java:287)Solution: The following needs to be added to the java.policy file to resolve this issue.
grant codeBase "file:${java.home}/fips${com.ibm.fips.mode}/lib/ext/*" { permission java.security.AllPermission; };For customers using mixed JDK environment, jvms running on JDK lower than 8.0.8.0 might be unable to open PKCS12 keystores due to an UnrecoverableKeyException after dmgr updates the keystore files: Unable to open PKCS12 keystores due to an UnrecoverableKeyException
- 8.5.5.23
- The ability to administer DataPower appliances has been removed from the WebSphere Application Server Administrative Console. See details in PH50841.
- IBM HTTP Server: IBM HTTP Server now limits HTTP request bodies to 1 Gigabyte by default. Previously, there was no limit.
- The limit can be increased by using the LimitRequestBody directive. Users are encouraged to limit such increases using limited scope such as <Location> rather than changing it globally.
- 8.5.5.16
- If a WebSphere application running behind a HTTP proxy server (such as IBM HTTP Server with the WebSphere WebServer Plug-in) further configuration may be required to trust data from the proxy server. See Potential WebSphere Application Server problems when deployed behind a WebSphere-aware proxy server.
Off
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Document Information
Modified date:
28 January 2026
UID
ibm17182384