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Invalid credentials for synchronization. Error -36

We have had a few mobile phones recently become "Not" compliant. When I have checked Sophos Mobile Control the device says "Device has to Synchronize" >4weeks. When I look at the Tasks Archive list it shows it Completely Failed to Sync....and when I look at this it shows "Invalid credentials for synchronisation" Error -36

Can anyone explain what this means and how to get rid of it....I have 5-6 phones now show this same error



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  • Hi Jon,

    we had that issue in the past in an old version of the Sophos Mobile Control app on Android.
    Are we talking about Android devices here? Are you perhaps using an SMC 4 client together with an SMC 5 server?

    Please make sure you are using the latest version of the SMC app available in the app store on your devices.

    Best regards
    Stefan
  • Yeah they are a mix of Android device HTC Sony Xperia phones, I did try updating one the other day with the updates from the Google Play Store but still did not sync? In the end I removed the all the Sophos Apps from the phone (Control, Security and Guard) deleted the Account from Control and re-installed it