This error message has popup since I have upgraded confluence to version 6.4.3 - my support expires Aug 2018.
There's no warning or error messages in the log files about this.
What is causing this error and how do I rectify it?
There's no additional requirements as of the last update.
Can you please try clearing your plugin cache first and see if that resolves your issue? Are you able to connect to the Marketplace via your instance?
If clearing the plugin cache does not work, and you're able to connect to the UPM (Marketplace), can you have a close look at EOL Check Causes Health Check to Fail when a Proxy is Being Used?
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