• Choose the cog icon
• Select General configuration
• Go the category ‘Administration’ and choose ‘Backup & Restore’
• Check ‘Include Attachments’ and click Export

• Go to Atlassian\Confluence\confluence\WEB-INF\classes folder
• Open confluence-init.properties file with a text editor in order to find the location of your home directory. The default location of the home directory in Windows is the following  C:\Program Files\Atlassian\Application Data\Confluence

How to find the Server ID

Confluence administration > go to “Administration” category  and select “License  Details” > Server ID

How to create the License Key

Log in to attlasian.com > Licences > Paste the Server ID > The License Key will be generated.