| Action | CLI/Script (macOS) | GUI Steps | |--------|--------------------|-----------| | | sudo /Applications/Parallels\ Desktop.app/Contents/MacOS/PrlCtrl license add <YOUR‑KEY> | Open Parallels → Preferences → License → Enter key | | List current license info | prlctl license list | Preferences → License → “View License Details” | | De‑register a device | prlctl license remove (follow prompts) | Parallels Account → Devices → “Remove” next to the Mac | | Check for updates | softwareupdate --install --all (includes Parallels if installed via App Store) | Parallels → Check for Updates… | | Export a VM for backup | prlctl clone <VM‑ID> --name <New‑Name> --full | VM → File → Export… |

| Reason | Typical Symptom | Fix | |--------|----------------|-----| | | “Invalid license key” error. | Double‑check the characters, watch out for “O” vs. “0”, “I” vs. “1”. | | Internet Connectivity Issues | “Cannot connect to activation server.” | Verify that your firewall or corporate proxy allows outbound HTTPS to activation.parallels.com . | | Exceeded Device Limit | “License already in use on X devices.” | De‑register an old Mac from your Parallels account or upgrade to a higher‑tier license. | | Expired Subscription | “License has expired.” | Renew the subscription via the Parallels portal. | | Corrupt Installation | Random crashes or activation pop‑ups after successful entry. | Re‑install Parallels, then re‑enter the key. |

Version 26 focuses on stability, security, and integration with the latest software ecosystems.

Parallels Desktop 26 is the latest version of the popular virtualization software developed by Parallels, Inc. It allows users to create and manage virtual machines, enabling them to run multiple operating systems, including Windows, Linux, and macOS, on their Mac computer.