How to install CrashPlan on Catalina (10.15), Big Sur and later?

CrashPlan with black house icon necessary

Since macOS Catalina (10.15) there is no 32-bit support anymore in macOS. This means that since then at least CrashPlan version 3.x (black house icon) is required. CrashPlan version 2010 (blue house icon) does not contain an app for x86_64 architecture. If you are still using CrashPlan 2010, you will need to restart with version 3.x and a matching new account.

If CrashPlan on macOS Big Sur (version 11) does not start with this message after installation:

Unable to connect to the backup engine, retry?

Unable to connect to the backup engine, retry?

In such a case, the engine has not started. Open a Terminal.app and enter this command:

$ sudo launchctl load -w /Library/LaunchDaemons/com.crashplan.engine.plist

Confirm the command with the Enter ↩︎ key. Wait a few seconds and choose Yes to try again:

Unable to connect to the backup engine, retry? [ Yes ]

CrashPlan may not be compatible with security software such as F-Secure, Ziggo Safe Online, CleanMyMac X.

macOS Mojave (10.14) and later not backing up files with personal data.

Wie installiere ich CrashPlan auf Big Sur? Hoe installeer ik CrashPlan op Big Sur?