Up until yesterday I've been using Firefox ESR 52.1.0 (64-bit) in order to access a VPN I need for work, which requires a Java plugin. I'm also running Firefox Developer Edition 54.0a2 (2017-04-20) (64-bit).Yesterday I updated Java to 'Version 8 Update 131 (build 1.8.0_131-b11)', and I can longer use Java plugins on any version of Firefox, which means I can no longer access the VPN.

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It was my understanding that The ESR versions of Firefox would continue to support Java through into 2018, but this has not been my experience.

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Are there any specific issues with these versions of Firefox that prevent Java Plugins from working, or is this an issue with that version of Java itself?

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Thanks!