An update to CrashPlan was rolled out at version 4.8 but no download files were available on their site for Windows. So if you’ve been trying to manage your Linux headless install and its failing, this might be why.

Here’s the release notes.

https://support.code42.com/Release_Notes/Code42_Platform/Code42_Public_Cloud_Version_5.4

I don’t know how to kick off updates to CrashPlan on Windows manually, due to this update being pushed out by CrashPlan cloud.

Update 09/30/2016 @ 2:40PM

Was able to direct connect via port 4243 headless without issues.

Update 09/30/2016 @ 10:00AM

Tried accessing a Linux server running 4.8.0 with a Windows client running 4.8.0 with no luck. Essentially what you would call headless, this was over an SSH tunnel. Will try direct.

Update 09/30/2016 @ 9:15AM

Got a reply from CrashPlan on twitter.