- If you are using a Microsoft Exchange account with your Outlook, the Outlook program will automatically log you in whenever you open the program. However, this feature can be disabled to prevent.
- You have successfully signed out of Outlook Web App. To help protect your e-mail account, close all browser windows.
- You can log out of your Microsoft Outlook account on a browser, but those using the desktop and mobile apps will have to use workarounds to sign out.
- If you want to log out on your mobile device, you'll need to delete your account from the Outlook app.
- To log out of your Outlook account on the Mac app, you will need to remove your account through the 'Preferences' menu.
- Windows users can log out of Miscrosoft Outlook by changing their profile through the client's 'Account Settings.'

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Before you can do anything in Microsoft Outlook, you'll need to know the ins and outs – that is, how to log in and log out of your email account.
Logging in is relatively straightforward, but once you're entrenched in Outlook's user interface, you might have trouble figuring out how to sign out. And depending on the device, you may not be able to log out of Outlook without deleting or removing your account.
Specifically, for those using the Outlook desktop app for Mac or the Outlook mobile app, 'logging out' in the traditional sense isn't really possible. On the mobile app, your phone's built-in security features serve as a way to keep your inbox safe unless you decide to delete your account from the app.
For those using the email client's most recent versions, Outlook 2013 or Outlook 2016, all your account information is tied to your device's user account and stored locally on your computer. That means it will be accessible to anyone if they log in through your user account, unless you remove it.
If you really want to protect your account on your mobile device and computer, there are several ways to keep your messages secure.
Here's how to log out of Outlook across devices.
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How to log out of Outlook.com
1. From your Outlook inbox, click on the profile icon in the upper-right corner of your screen. =
2. Click 'Sign out.'
© Chrissy Montelli/Business Insider Your profile icon is your selected profile picture or your initials. Chrissy Montelli/Business InsiderSign Out Of Outlook App On Phone
How to log out of Outlook on the mobile app by removing your account
1. Launch your Outlook mobile app.
Sign Out Outlook App Windows
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2. Tap your profile icon in the upper left.
© Chrissy Montelli/Business Insider It will either be a photo or the initial of your first name. Chrissy Montelli/Business Insider
3. Select the 'Settings' gear icon in the bottom left corner of the screen.
4. Tap the account you want to log out of.
© Chrissy Montelli/Business Insider All synced accounts will be listed under the 'Mail Accounts' heading. Chrissy Montelli/Business Insider5. Choose 'Delete Account.'
How to log out of Outlook on the desktop app by deleting your account on a Mac
1. Open the Outlook client.
2. Select 'Outlook' in your top menu.
3. Choose 'Preferences.'
4. Select 'Accounts' from the list.
© Abbey White/Business Insider You can find it under the 'Personal Settings' heading. Abbey White/Business Insider5. Click the account you want to remove from the left-hand column.
© Abbey White/Business Insider All your synced Outlook accounts, including your default, will appear here. Abbey White/Business Insider6. Select the minus symbol (-) at the bottom of the column.
7. When prompted, confirm that you want to 'Delete' the account.
How to log out of Outlook on the desktop Windows app by changing your profile
1. Launch Outlook.
2. Click 'File' located in the far left corner of your top menu bar.
3. Select 'Change Profile' from the 'Account Settings dropdown.
© Abbey White/Business Insider You can also manage your profiles from this section. Abbey White/Business Insider4. Click 'OK.'
© Abbey White/Business Insider Outlook allows you to be logged into multiple accounts at once. Abbey White/Business InsiderRelated coverage from Tech Reference:
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Applies to: Exchange Server 2013
This topic explains how to customize the color and images of the sign-in, language selection, and error pages for Outlook Web App.
The Outlook Web App sign-in, language selection, and error pages are created based on graphics and .css files in the themes resources folder. Outlook Web App uses only one set of sign-in, language selection, and error pages for all themes. Any modifications to those pages will be seen by all users. You can find the theme resources folder in the Exchange installation directory at V15FrontEndHttpProxyowaauthversionthemesresources. You'll need a text editor to change the default colors, and a graphics editor to change the images. If you must match a specific color and you can't find a match for it at Color Table, you can use an image editing tool to sample a color and determine its HTML RGB value.
If you have multiple servers supporting Outlook Web App and want them all to use the same sign-in, language, and error pages, you must copy the modified files to each server. You should also create a back-up copy of your customized files. If you reinstall or upgrade Exchange, all files in the themes folders will be overwritten. You'll have to copy your customized files back to the appropriate folder after the reinstallation or upgrade is complete.
Important
Back up copies of all the files that you'll be changing before you start to create your custom sign-in and sign-out pages.
For information about creating a custom theme, see Create a theme for Outlook Web App.
What do you need to know before you begin?
Estimated time to complete this task: 45 minutes.
You need to be assigned permissions before you can perform this procedure or procedures. To see what permissions you need, see the 'Graphics editor' entry under 'Outlook Web App Permissions' in the Clients and mobile devices permissions topic.
For information about keyboard shortcuts that may apply to the procedures in this topic, see Keyboard shortcuts in the Exchange admin center.
Sign Out Outlook App Android
Tip
Having problems? Ask for help in the Exchange forums. Visit the forums at Exchange Server.
Sign Out Of Outlook App
Customize the color of the sign-in page
Log on to the Exchange server and use Windows Explorer to go to the Exchange server installation directory and find V15FrontEndHttpProxyowaauth<version>themesresources.
Use a text editor, such as Notepad, to open logon.css.
Search for the default color value #0072c6 and replace it with the HTML RGB value for the color you want to use.
Save and close the file.
Customize the color of the error page
Log on to the Exchange server and use Windows Explorer to go to the Exchange server installation directory and find V15FrontEndHttpProxyowaauth<version>themesresources.
Use a text editor, such as Notepad, to open errorFE.css.
Search for the default color value #0072c6 and replace it with the HTML RGB value for the color you want to use.
Save and close the file.
Customize the color of the language selection page
Log on to the Exchange server, then use Windows Explorer to go to the Exchange server installation directory and find V15ClientAccessOwaprem<version>resourcesstyles.
Use a text editor, such as Notepad, to open LanguageSelection.css.
Search for the default color value #0072c6 and replace it with the HTML RGB value for the color you want to use.
Save and close the file.
Customize the images on the sign-in and error pages
Use an image editing tool to open and edit the images used to build the sign-in and error pages.
Log on to the Exchange server and use Windows Explorer to go to the Exchange server installation directory and find V15FrontEndHttpProxyowaauth<version>themesresources.
Use a graphics editor to open and modify the following files:
owa_text_blue.png, to change the 'Outlook Web App' text logo.
olk_logo_white.png, to change the app logo in the left bar.
olk_logo_white_cropped.png, to change the image in the left side panel of the error page.
sign_in_arrow.png, to change the icon left of the 'sign in' button.
olk_exchange_text_blue.png, to change the 'Outlook Mobile' logo on tnarrow layout.
olk_logo_white_small.png is used in tnarrow.
olk_exchange_text_stacked_white_small.png is used in tnarrow.
Search for the default color value #0072c6 and replace it with the HTML RGB value for the color you want to use.
Save and close the file.
How do you know this worked?
Open the Outlook Web App sign-in page in Internet Explorer. If you're testing the changes to the default website on the server that's hosting the Outlook Web App virtual directory, you can test them by opening Internet Explorer and entering the URL https://localhost/owa.
How To Sign Out Outlook App
If you don't see your changes, do the following:
On the toolbar, select Settings > Internet options > General.
Under Browsing history, select Delete.
Select Temporary Internet files and website files, and then select Delete.
When Internet Explorer is finished deleting, select OK to close Internet options.
Refresh the browser window.
Sign Out Of Outlook Windows 10
Tip
To see the effects of your changes, you can keep the .css file that you're editing open and refresh the browser window after saving each change.
