: If you are troubleshooting a buggy trial (rather than trying to extend it), use the official Uninstall Instructions to remove Cinema 4D, ZBrush, and Redshift before attempting a fresh trial on a different machine if absolutely necessary.
A background service or manual utility that safely resets the trial period for Maxon One (Cinema 4D, Red Giant, Redshift, Universe, etc.) without requiring full reinstallation or system tampering. Maxon One Trial Reset
Contact Maxon for an extension
– Keeps custom layouts, presets, and render settings untouched. : If you are troubleshooting a buggy trial
: If you already have a single product license (like Cinema 4D), you may need to release it in the Maxon App before the Maxon One trial can take over. Comparison of Maxon One Access How do I uninstall my products? - Knowledge Base - Maxon : If you already have a single product