I have tried to install 23.6 and 23.8 (both setup.exe and .msi), with the same result:
After accepting the defaults, it creates the directory and starts copying files. After a few minutes, the installation suddenly rolls back and removes the directory - leaving no log of the attempt. There's nothing in %Program Files%\Oracle\Inventory\logs either.
Regarding the prerequisites:
- I have Windows 11 Enterprise 23H2 with 64GB RAM
- It's company managed
- I am using Admin By Request for Administrator privileges (this works for a colleague of mine, so I assume it satisfies the prerequisites)
- The
ORACLE_HOME and TNS_ADMIN environment variables are not set
It's unclear to me whether I need to uninstall all earlier Oracle releases (I have Oracle19c installed) or if this only applies to earlier releases of version 23? (For the record: I tried to uninstall 19c via the OUI, but it failed as well)