When in Outlook, a lot of the higher keys (SHIFT+key) are moved to others that don't correspond to the keyboard layout.
Example: Shift+2 should create @ and not "

How can I fix this?

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I have created a signature for one of my e-mail accounts but when I create a new message and select that account the signature does not show.

If I set the account with the signature as the default account and then create a new message it shows, but I do not want to do this every time I wish to send a message via that account.

How can I make Outlook to select my signature automatically when changing my account?

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When I send a message, I get it returned with a message from System Administror;

550 #5.1.0 Address rejected
553 Sorry, that domain isn't in my list of allowed rcpthosts
Relaying prohibited

How do I fix this?

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Sometimes I hit CTRL+ENTER or ALT+S by mistake and off goes the message as it is Outlook's shortcut for the Send button.

Is there any way I can prevent this from happening?

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When replying and forwarding to a message, I get a long blue line next to the original message.

I tried selecting and deleting this line but it still remains there.

How can I remove this line?

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I've sent out a meeting invitation but not everybody has responded yet.
Is there any way to send them a reminder to respond?

Preferably they should be able to directly respond from that message as they might have "misplaced" their original invitation.

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I want to prevent unauthorized access to my emails.

Is there any way I can password protect the entire Outlook Mail Profile so people will be prompted for a password when opening Outlook?

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I've create links to files on my computer in the Shortcuts Navigation as per your previous tip. However, when clicking on those links I'm getting the following warning message;

Microsoft Office Outlook Security Notice
Microsoft Office has identified a potential security concern.
This location may be unsafe.
<location to file>
Hyperlinks can be harmful to your computer and data. To protect your computer, click only hyperlinks from trusted sources.

Since I've created the links myself and since I've now seen this message countless of times already, I will never ever forget to click only hyperlinks from trusted sources. How can I make this warning go away for good?

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I got the advise to disable the virus scanner integration with Outlook.
Isn't that a bad thing to do?

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With Google moving away from Basic Authentication and recommending to use OAuth instead, I want to enable 2-Step Verification for my Google account to increase security.

How do I best approach this and what changes do I need to make in Outlook to keep receiving my emails?

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