Parallels 26 Activation Failure

Discussion in 'Parallels Desktop on a Mac with Apple silicon' started by PhilipG5, Aug 26, 2025.

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  1. PhilipG5

    PhilipG5 Bit poster

    Messages:
    2
    I upgraded from Parallels Desktop Pro v20 today to v26 and cannot Activate or Reactivate my product key.
    Error:
    Unable to verify the license signature. Please try to activate Parallels Desktop.
     
    PhilipG5, Aug 26, 2025
    #1
  2. JohnS30

    JohnS30 Junior Member

    Messages:
    18
    Same problem here. I opened a support ticket and received a new, temporary license key that works. They acknowledge there's a problem and they are working on a fix.
     
    JohnS30, Aug 26, 2025
    #2
  3. Trishna Oobeyram

    Trishna Oobeyram Staff Member

    Messages:
    357
    Hello @PhilipG5
    We have created a support ticket to assist you.
    Kindly check your email.
    Regards,
     
    Trishna Oobeyram, Aug 27, 2025
    #3
  4. PhilipG5

    PhilipG5 Bit poster

    Messages:
    2
    My issue has been resolved, thank you. Despite no change to my local firewall settings, using a guest network allowed the reactivation through.
     
    PhilipG5, Aug 27, 2025
    #4
  5. 주영신

    주영신 Bit poster

    Messages:
    2
    I upgraded from Parallels Desktop Pro v20 today to v26 and cannot Activate or Reactivate my product key.
    Error:
    Unable to verify the license signature. Please try to activate Parallels Desktop.
     
    주영신, Sep 26, 2025
    #5
  6. ErdmannJ

    ErdmannJ Bit poster

    Messages:
    1
    I upgraded to 26.1.0 (57287) today.
    Now the App is unable to activate the license.
    -> Happens on 2 from 3 machines in the same network
    Using another network does not solve the problem.
     
    ErdmannJ, Sep 26, 2025
    #6
  7. TonyJ4

    TonyJ4

    Messages:
    1
    I have the same issue following an attempt to upgrade today. How do I resolve this?
     
    TonyJ4, Sep 27, 2025
    #7

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