This has been dormant for a while, but thought I would post the solution to my issue in case it helps anyone else. Basically, there is a known incompatibility between AVG Anti-Virus and Meraki. AVG has no plans to change that. The following quote is from an Avast employee (they now own AVG): - "It's not possible to whitelist such traffic at the moment so we don't recommend using AVG and "Meraki" together. Thank you for your understanding!" You can read more here: - https://support.avg.com/answers?id=9060N000000UDFYQA4 I have confirmed this by uninstalling AVG from two VM's and Meraki then works perfectly. I note, it must be uninstalled, disabling it is not enough.
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