Separate User Folders
SeparateUserFolders is a sandbox setting in Sandboxie Ini available since v0.2.2 / 5.41.2. It specifies whether user profile files will be stored separately in the sandbox.
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[DefaultBox]
SeparateUserFolders=n
The setting in the example will result in user profile files no longer being stored separately in the sandbox.
Related Sandboxie Plus setting: Sandbox Options > File Options > Separate user folders