Unable to install Couchbase Server 7.0 on WIndows

Trying to install the Community Server 7.0.0 or 7.0.1 on Windows and at the point where it says “Installing Python” it just rolls back.

Looking at the installer logs I see the following error:

MSI (s) (30:44) [22:28:04:843]: Executing op: CustomActionSchedule(Action=RollbackInstallCbpy,ActionType=1345,Source=BinaryData,Target=WixQuietExec64,CustomActionData="C:\Windows\sysnative\cmd.exe" /s /c "rmdir /s /q "C:\Program Files\Couchbase\Server\lib\python\runtime"")
MSI (s) (30:44) [22:28:04:843]: Executing op: ActionStart(Name=InstallCbpy,Description=Installing Python 3,)
Action 22:28:04: InstallCbpy. Installing Python 3
MSI (s) (30:44) [22:28:04:843]: Executing op: CustomActionSchedule(Action=InstallCbpy,ActionType=1025,Source=BinaryData,Target=WixQuietExec64,CustomActionData="C:\Windows\sysnative\cmd.exe" /s /c ""C:\Program Files\Couchbase\Server\lib\python\cbpy-installer.exe" /NoRegistry=1 /S /D=C:\Program Files\Couchbase\Server\lib\python\runtime")
MSI (s) (30:C4) [22:28:04:859]: Invoking remote custom action. DLL: C:\Windows\Installer\MSI3663.tmp, Entrypoint: WixQuietExec64
MSI (s) (30:44) [22:28:05:156]: Executing op: ActionStart(Name=FixConfig,,)
Action 22:28:05: FixConfig. 
MSI (s) (30:44) [22:28:05:156]: Executing op: CustomActionSchedule(Action=FixConfig,ActionType=3073,Source=BinaryData,Target=WixQuietExec64,CustomActionData="C:\Windows\sysnative\cmd.exe" /s /c ""C:\Program Files\Couchbase\Server\bin\installer-util.exe" "C:\Program Files\Couchbase\Server\FOO" fixpaths")
MSI (s) (30:3C) [22:28:05:156]: Invoking remote custom action. DLL: C:\Windows\Installer\MSI379C.tmp, Entrypoint: WixQuietExec64
MSI (s) (30:B0) [22:28:05:156]: Generating random cookie.
MSI (s) (30:B0) [22:28:05:156]: Created Custom Action Server with PID 9780 (0x2634).
MSI (s) (30:28) [22:28:05:187]: Running as a service.
MSI (s) (30:28) [22:28:05:187]: Hello, I'm your 32bit Elevated Non-remapped custom action server.
WixQuietExec64:  C:\Program Files\Couchbase\Server\bin\..\lib\python\runtime\python.exe does not exist!
WixQuietExec64:  Error 0x80070001: Command line returned an error.
WixQuietExec64:  Error 0x80070001: QuietExec64 Failed
WixQuietExec64:  Error 0x80070001: Failed in ExecCommon method
CustomAction FixConfig returned actual error code 1603 (note this may not be 100% accurate if translation happened inside sandbox)

The 6.6 installer works fine.
Was the installer even tested and how is this the latest “stable” version?

Hi @Rudolf_Martincsek
This is issue MB-47806 - please see that ticket for the workarounds.