Error "Child Process exited with Code 2" shown when starting Cryptomator.exe twice

[infeo]

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• I have searched existing issues for duplicates
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Summary

Executing Cryptomator.exe while the application is already running shows an error message.

What software is involved?

• Operating System: Windows 10
• Cryptomator: 1.6.7

Volume Type

No response

Steps to Reproduce

1. Start Cryptomator
2. Start Cryptomator again

Expected Behavior

The GUI of the already running Cryptomator instance is shown

Actual Behavior

An error message is displayed stating "The Child process exited with Code 2" and in the background the GUI of the already running Cryptomator instance is shown.

Reproducibility

Always

Relevant Log Output

-/-

Anything else?

First reported in #2127 (but in German language)

[infeo]

Thanks for the detailed reports.

We found the cause for the issue, it is unrelated to the similar error "... exited with Code 1"(see #2130 ), or any other issue when Cryptomator is running.

It is caused by an upstream "fix" in the JDK (see https://bugs.openjdk.java.net/browse/JDK-8272328). We need to find a way to circumvent that our Java applications spawns a child process due to a missing path.

[infeo]

The child process spawning on windows cannot easily be prevented, hence we decided to just return 0 if a running application is found.

[overheadhunter]

For the record: https://bugs.openjdk.java.net/browse/JDK-8284067