Hello team, We are currently testing the upgrade of Splunk Universal Forwarder (x86) version 10.0.0.0 on a Windows 10 32-bit virtual machine. However, the upgrade consistently fails with error code 1603. https://download.splunk.com/products/universalforwarder/releases/10.0.0/windows/splunkforwarder-10.0.0-ea5bfadeac3a-windows-x86.msi Please note the following observations: Fresh installation of version 10.0.0.0 completes successfully. Upgrade from version 9.4.2.0 to 9.4.3.0 works without any issues. The upgrade was attempted both via UI and using silent switches, but the result was the same. Unfortunately, we were unable to attach the log file for reference. And actions are rolled back. Could you please assist us in identifying and resolving the root cause of this issue? Adding few more testings : September 26,2025 There was a new release – version 10.0.1. Tested on 32-bit, and the same issue observed in version 10.0.0 persists. All the error prompts remain unchanged.
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