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How to prevent Outlook asking for credentials exchange every time?

Have you been asked for exchange credentials when opening Microsoft Outlook? If yes, you may notice the Windows Security dialog box pops up when Outlook launching every time. See screen shot below. Normally you can fix this problem with checking the Remember my credentials after entering your credentials, and click the OK button.

However, in some special cases, it asks for exchange credentials every time when launching Microsoft Outlook, but there is no option of Remember my credential at all in the popping up Windows Security dialog box. (See the following screen shot.) In this article, I will guide you to fix this problem and prevent Microsoft Outlook from asking for exchange credentials with configuring Account Settings quickly.

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To prevent Microsoft Outlook from asking for exchange credential each time when starting, you need to change some exchange settings in the Account Settings. Please do as following:

Step 1: Open the Account Settings dialog box:

  1. In Outlook 2007, please click the Tools > Account Settings;
  2. In Outlook 2010 and 2013, please click the File > Info > Account Settings > Account Settings.

Step 2: In the Account Settings dialog box,

  1. Go to the E-mail tab;
  2. Click to highlight the exchange account that asks for logon credentials every time when opening Microsoft Outlook;
  3. Click the Change button.

Step 3: In the new dialog box of Change Account, please click the More Settings button.

Step 4: In the popping up Microsoft Exchange dialog box,

  1. Go to the Security tab;
  2. Uncheck the option of Always prompt for logon credentials;
  3. Click the OK button.

Step 5: Now you get back to the Change Account dialog box, please click the Next button and Finish button successively.

Step 6: Click the Close button to exit the Account Settings dialog box.

After configuring the security settings of specified exchange account, it won’t pop up dialog box and asking for exchange credential when opening Microsoft Outlook any longer.


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  • To post as a guest, your comment is unpublished.
    Ben Wadeley · 6 months ago
    For non-experienced user

    Close down outlook completely

    Control Panel > (view by icons, not categories) > mail > Show Profiles > Add > (call it whatever you like) > change the dropdown to the new one you just created
    This will recreate the profile settings and you will need to re-add your mailboxes

    C:\users\(you username)\appdata(this is hidden so make sure you can see hidden files - google guides available for this)local\microsoft\outlook
    This file, rename it to "Outlookold"
    (this backs up the file so we can get it back by changing the name back to "Outlook" if need be - if the fix works, delete this to save yourself some space after you're done)

    NOW, this is the first time you should be trying to open outlook - it will take a while but should load up after recreating the configuration folder and the configuring your account - then just re-add your mailbox(es).

    For experienced users
    *insert disclaimer about being careful with RegEdit*

    reg delete "\\%asset%\HKEY_USERS\%SID%\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook"

    For super users

    *insert disclaimer about being careful with RegEdit*
    locate the mail profile that's active
    go to 9375CFF0413111d3b88a00104b2a6676
    Find which one has the affected mailbox in "Account Name"
    Note the "Service UID" - go to the binary value in the "Profile" key that we're in
    in here, find the REG_BINARY for "01023d0d" and make a note of the binary - go to the binary value in the "Profile" key that we're in
    Right Click > New > Binary Value

    Name = 00036619
    Value = 01 f0 00 80
  • To post as a guest, your comment is unpublished.
    terry · 7 months ago
    my box is NOT checked. This is not the solution.
  • To post as a guest, your comment is unpublished.
    Chinziri · 7 months ago
    My laptop running Windows 8.1 and using MS Outlook 2013 has all those setting correct ie as you described them but still I getting this annoying Windows Security popup that requires me to enter password everytime I start MS Outlook. What could be another problem for this occurence.
  • To post as a guest, your comment is unpublished.
    Hal Bates · 10 months ago
    M$ is a sack of poo. I can't believe nobody has come up with a professional mail, calendar and contacts package to rival this sack of horse sh*t. The button was already unchecked so this did not help with a recurring problem.
  • To post as a guest, your comment is unpublished.
    Tiago · 1 years ago
    To me was necessary one step more:
    Change the option "logon network security" to "password authentication" instead "negotiate authentication" on Exchange settings window.