VMware tip – Protocol error from VMX


Small tip, big victory. I have weekly snapshots and clones that are scheduled through vCenter. Suddenly one of the clone tasks stopped working and threw this error:

A General System error occurred: Protocol error from VMX.

Hmmm…that’s odd. It’s run fine up to now right? Luckily the fix couldn’t be too much simpler than this.

SOLUTION: Restart the VMware Tools service in the guest machine and restart the task

et voila!

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  • khuiwong
    December 13, 2012 at 1:19 pm

    Thanks so much! This works for me. I have this error while using VEEAM to backup a vm.

  • Waleed Qassem
    May 6, 2013 at 5:54 am

    I had a similar problem, and I have searched the internet for a solution, but couldn’t find a proper solution, it kept failing, until I came a cross this tip, tested it and it worked like a charm.
    Thanks alot, this was really helpfull

    • DiscoPosse
      May 6, 2013 at 8:48 am

      That’s great to hear! I’m glad that it helped out 🙂

  • Asim
    October 29, 2013 at 3:21 am

    Awesome, Thank u so much 🙂 Its works for me also.

    i was unable to do cloning. 🙂

    • DiscoPosse
      October 29, 2013 at 4:50 am

      That’s great to hear!

  • Richard
    May 14, 2015 at 5:07 pm

    Excelente… me tomo semanas encontrar una solucion hasta que llegue aca… me funciona de maravillas..

    Muchas Gracias.

  • Shabab
    July 14, 2015 at 10:05 am

    You really saved my day.. thanks a lot for your tip. it worked like miracle for me.. Excellent..


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