Hi all,
i'm new to the forum and i'm here to explain you the strange situation in which we get involved yesterday.
Scenario: we had to upgrade CRM version from 2015 to 2016 Service Pack 1 on a 3 servers deployement (Front End, Back End, DB server). First of all we installed the CRM 2016 package on the FE and BE servers and after the update of the organization all were fine, after that we installed the newer version of Language Pack (ITA in our case) on the FE server, then we have installed the Service Pack 1 package on FE server first, after that the organization was automatically updated to the last version and, EVEN if back end server was not updated, the CRM was navigable and all were fine, so we installed the Service Pack 1 package also on the Back End server and after that, when we browsed the organization from the Deployment Manager, we got the error "languagePack version is Invalid". After multiple tries (we reinstalled the Language Pack from scratch, disabled and reenabled the organization, deleted and reimported the organization, trying really everything) we couldn't fix the problem so our customer had to restore to the 2015 version.
I saw on the internet, in multiple forums, but this error is no explained. If someone has some ideas or has already experienced this error, any help is appreciated.
Thank you.
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