Symptoms
When I start Parallels Desktop I get a message:
![](https://kb.parallels.com/Attachments/kcs-171659/Screen%20Shot%202021-07-03%20at%205.16.27%20PM.png)
Clicking on 'Renew License' returns "Network error":
![](https://kb.parallels.com/Attachments/kcs-171659/fwerebg.png)
Cause
Parallels Desktop Enterprise edition versions 10 and earlier have reached End of Life state and no longer can be activated with the keys that have format A00***-*****-*****-*****-*****.
Resolution
- Contact your system administrator to get a new license key.
- Upgrade your copy to the latest version of Parallels Desktop Business Edition.
- After the upgrade, activate your copy with the new license key.
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