CrashPlan 4.3.0 shows “Unable to connect to backup engine, retry?”

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CrashPlan woes continue!

This error is from an earlier version of the CrashPlan software i.e. 4.3.0 which one of my customers is still running. So here it is – fully appreciate you won’t be able to read native Polish language but the error reads as:

“Unable to connect to backup engine, retry?”

CrashPlan_4.3.0_Unable_to_connect_to_backup_engine_retry_1

Solution wasn’t as straight forward as restarting CrashPlanService though.. – at least not initially 😉

Basically, after poking around within CrashPlan file and folder structure, I came across ui_XXX.properties file which lives (by default) in C:\ProgramData\CrashPlan\conf\. Interestingly, servicePort parameter was configured with port 4243 so I was fully expecting for this port to be used by CrashPlanService.exe

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Digging in with netstat shows something completely different i.e. CrashPlanService.exe is not listening on port 4243 but on port 4273 instead…

CrashPlan_4.3.0_Unable_to_connect_to_backup_engine_retry_3

Quick change the in .properties files and reboot of services was enough to get it going again:

CrashPlan_4.3.0_Unable_to_connect_to_backup_engine_retry_4

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That’s it – desktop GUI now works as expected so you can login etc.

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