Setting Firefox(Portable) as default

Yes, you can set it as default,
but when a program calls for firefox,
the system doesn't realize you mean Firefox Portable.


here
^This will make it work.

I shortcut my FirefoxPortable through Vbox so it's up to date, and I can just put it on a flash drive if I ever have to replace it.

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Disable Run Security Warning -xp

Windows Key + R
gpedit.msc
User Configuration > Administrative Templates > Windows Components >
Attachment Manager
Open Inclusion List for low file types
Set to Enabled,
include .exe .msi in the dialog box.

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How to change the default shell

To change the shell, you type:
chsh

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Startup Manager

I like this program. Suggested settings;