Can we downgrade SLES 12 SP4 to SLES 12 SP3 in Azure VM?
As long as the downgrade does not require user input during the process, you can achieve that. Generally, Azure does not support in place upgrades of some versions as it requires user input prior to the SSH or RDP connection enabling. Hence, the upgrade will get stuck. But SP4 to SP3 should not require any user input and should be fine to downgrade. I might suggest you test it on a dev VM prior to doing it on a production system though just to be sure.
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