Hi,
Done upgrades from windows server 2012 -> 2017 and 2012 -> 2019, both without any problems.
Stop the Cognos service before the upgrades, and make sure to install the upgrades with the same language / region settings.
After the upgrade, start the Cognos services again, no re-configurations needed, but to make sure, it is a good idea to start the Cognos from the configuration application the first time after the upgrade.
#ibmchampions
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René Kent Nielsen
Brand manager
CogniTech A/S
Herning
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