Month: October 2019

Java – Unsupported major.minor version 52.0

Building a new development machine for building Java applications. One of the requirements to build java applications is the installation of development tools. Somewhere to writ and debug code. The choice is to use Red Hat CodeReady Studio.

During the initial install, came across the below error:

java.lang.UnsupportedClassVersionError: com/redhat/rhn/branding/strings/StringPackage : Unsupported major.minor version 52.0

The solution turned out to be a fairly simple one.

My server had Java JDK 7 installed, but the minimum Java version required for Red Hat CodeReady Studio is JDK 8.

Once installed, I was able to then install Red Hat CodeReady Studio without any issues.

The installation guide for CodeReady Studio only talks about OpenJDK which RedHat recommends:

https://access.redhat.com/documentation/en-us/red_hat_codeready_studio/12.12/html/installation_guide/assembly_installation-guide-for-devstudio

September 2019 Patching Issues – KB4517211 to the rescue

Following on from the patching issues list in September 2019 here, KB4517211 was released several days ago with several fixes for issues with Windows 10 1903.

I know this because I experienced quite a few of these issues while travelling recently.

Fixed:

Audio in games is quiet or different than expected

Microsoft has received reports that audio in certain games is quieter or different than expected. At the request of some of our audio partners, we implemented a compatibility change that enabled certain games to query support and render multi-channel audio. Due to customer feedback, we are reverting this change as some games and some devices are not rendering multi-channel audio as expected. This may result in games sounding different than customers are used to and may have missing channels.

App-V Application Network Failure Error

Addresses an issue that prevents a Microsoft App-V application from opening and displays a network failure error. This issue occurs under certain circumstances, such as when a system’s battery is low or there is an unexpected power failure.

VPN Disconnection on Cellular Networks

Updates an issue that may cause you to disconnect from a virtual private network (VPN) on cellular networks.

A full list of resolved issues can be found here:

https://support.microsoft.com/en-au/help/4517211/windows-10-update-kb4517211

This KB is available through WSUS now.