When starting Toad for Oracle, the program, the Toad.exe program appears in the Windows Task Manager for a while and then disappear. However, using CTRL+SHIFT and right-click on Toad to run as a different user works fine.
No errors are reported and no event are found in the Event Manager.
Reinstalling Toad does not resolve the issue.
An older version of Toad (11.x) was already installed before installing Toad for Oracle version 12.12.
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