macOS: “openLCA.app is damaged and can’t be opened”

When you start openLCA on macOS the first time you may see an error message like this:

The reason for this is that openLCA is not a signed application and the security settings of macOS do not allow to run it.

To fix this, do the following steps:

move the openLCA_macOS_*.tr.gz to some other folder than the Download folder
extract this file using the macOS native Archive Utility
open the Terminal app and navigate to the folder where you extracted openLCA cd folder/with/openLCA
execute the following command: sudo xattr -r -d com.apple.quarantine openLCA.app

Another option is to change the security settings globally via sudo spctl --master-disable but this does not seem to work on new macOS versions.

Sources: