Installation of Office 365 stucks at 87%: "We couldn't install Office"

I am encountering problems installing Office 365 at my 32 bits Windows 7 laptop. During installation a pop up appears;

However the installation continues and the progress always stops at 87%.

What I did so far:

• Create new administrator account

• Firewall switched off

• Run sfc /scannow, no errors found

• Run Fix O15CTRRemove

• The previous version was Office 2010, so run uninstall Office 2010 with Fix it 50450

• There was only one file left:OneDriveSetup.exe.bak in the integration folder

• schtasks.exe /delete /tn "\Microsoft\Office\Office 15 Subscription Heartbeat", not found
• schtasks.exe /delete /tn "\Microsoft\Office\Office Automatic Update" not found
• schtasks.exe /delete /tn "\Microsoft\Office\Office Subscription Maintenance", not found

• Stop processes:
• integratedoffice.exe, not found
• appvshnotify.exe, not found
• firstrun.exe, not found
• setup*.exe, not found

• Delete service
• sc delete OfficeSvc, not found

• Delete the Microsoft Office 15 folder.

• Delete the ClickToRun folder.

• Delete the FFPackageLocker file, not found

• Delete the following registry subkeys:
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\15.0\ClickToRun
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\AppVISV
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Microsoft Office <Edition>15 - en-us, not found

• %ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs and press Enter.
• Delete the Office 2013 folders, not found

• Uninstall the Microsoft Office Habanero local component and Habanero supplemental local component1.Start a command prompt as an administrator.
• following command: MsiExec.exe /X{50150000-008F-0000-1000-0000000FF1CE}
• following command: MsiExec.exe /X{50150000-007E-0000-0000-0000000FF1CE}
• following command: MsiExec.exe /X{50150000-008C-0000-1000-0000000FF1CE}

All three give this message:

• Clean boot

• There is no printer spooler service to switch off

• Download page shows two equal installations at the same PC

• But the progress continues, until 87%.

 What happens in this stage of installation?