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- For JIRA: Choose the cog icon → System → System info → System Encoding
- For Confluence : Choose the cog icon → General configuration → Encoding
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With the wrong system encoding the certificate cant be decoded properly. As solution you can change your encoding back to the standard value "UTF-8" with follwing steps:
For JIRA:
- On the <jira/-install>/bin (or <tomcat-home>/bin for JIRA WAR installations) directory, open the setenv.sh(Linux)/setenv.bat(Windows) file.
- Add the line: JVM_SUPPORT_RECOMMENDED_ARGS="-Dfile.encoding=utf-8" and save it.
- Restart JIRA.
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