Microsoft.SharePoint.Administration.SPUpdatedConcurrencyException

I already wrote about this topic in the past (http://blog.riccardocelesti.it/an-update-conflict-has-occurred/ – Italian only, sorry guys). If you missed my previous post It was about the SPUpdatedConcurrencyException and how to avoid it. My suggestion was to add a farm property, command-line-upgrade-running and set its value to No. (more…)