Outlook Keeps Asking For Credentials (Username and Password)

A quite common drawback is when Outlook  begins asking for the person credentials, even when the right password is specified. It appears to be like like this: after beginning Outlook efficiently connects to the on-premises Exchange server (or Office 365 mailbox), the person sees a listing of folders within the mailbox and new emails within the Inbox. But after a couple of minutes of regular work, a window seems for getting into the person identify and password. The person enters the password and presses OK, however the window with the immediate to enter the credentials seems once more. By clicking the “Cancel” button, the person can proceed to work with Outlook, however after some time the window asking for the password pops up once more (typically the person account could also be on the similar time).  The drawback happens in numerous variations of Outlook (2019/2016/365) and Windows (there was an issue in each Windows 7/eight.1 and Windows 10).

Outlook 2016 keeps asking for a password

Most admins on this case attempt to recreate the mail profile, reinstall Office – however this often doesn’t assist. Outlook with some periodicity nonetheless requires the person to enter a password.

Consider a number of methods that may show you how to to take away the annoying password request window in Outlook.

First of all, in fact, you must make it possible for the person enters the right password, and didn’t overlook it :).

Also, attempt to hook up with your mailbox by the online interface (OWA) and log in. Perhaps the issue is that the person password has expired (the password has expired in keeping with the ) and have to be modified.

Clear Saved Outlook Credentials

Check if in case you have Outlook saved passwords saved within the Windows Password Manager (Credential Manager), attempt to delete all of them. To do that, go to Control PanelAll Control Panel ItemsUser AccountsManage your credential -> Windows Credentials. Find the saved passwords for Outlook/Office within the Generic Credentials record and take away them.

To straight entry Credential Manager, run the command:

rundll32.exe keymgr.dll,KRShowKeyMgr

saved passwords in the Credential Manager

Disable “Always Prompt for Credentials” Option in Outlook

Open your Outlook Account Settings (File -> Account Settings -> Account Settings), double click on in your Exchange account. Go to More settings -> choose Security tab. Clear the checkbox Always immediate for credentials within the User identification part.

If you will have an Office 365 mailbox related, this tab ought to have a further “Logon community safety” subject. Make positive that “Anonymous Authentication” shouldn’t be chosen.

Always prompt for credentials

Outlook Anywhere and NTLM authentication

If your Outlook is configured to entry the Exchange mailbox utilizing , confirm that NTLM authentication is used. At the identical time, you must examine the authentication kind used for the IIS web site on the Exchange server.
If the pc with an issue Outlook shouldn’t be joined to the Active Directory area, then quite the opposite, you must attempt to switc from NTLM authentication to Basic.

Outlook: Disable Office 365 Autodiscover

Somewhere within the fall of 2016, an replace was launched for Outlook 2016 that enabled a compulsory examine of the Office 365 cloud connection level. You can confirm this through the use of the Fiddler or TCPView instruments and monitor the makes an attempt to hook up with the autodiscover-s.outlook.com and outlook.workplace365.com servers.

To disable this examine, go to the registry key HKEY_CURRENT_USERSoftware MicrosoftOffice16.zeroOutlookAutoDiscover and create new DWORD parameter named ExcludeExplicitO365Endpoint and worth 1. Restart Outlook.

The ExcludeExplicitO365Endpoint registry parameter is relevant to Outlook 2016 model 16.zero.6741.2017 and newer (this parameter is further to the record of parameters that decide the kinds of Autodiscover processes when Outlook begins: see an article ).

You could make modifications to the registry with the next command:

reg add HKEY_CURRENT_USERSoftwareMicrosoftOfficex.zeroOutlookAutoDiscover /t REG_DWORD /v ExcludeExplicitO365Endpoint /d 1
Or, utilizing the PowerShell cmdlet :
Set-ItemProperty -Path "HKCU:SoftwareMicrosoftOffice16.zeroOutlookAutoDiscover" -Name 'ExcludeExplicitO365Endpoint' -Value 1 -Type DWORD –Force

Change Office 365 User Authentication Method

If your mailbox has been migrated from on-premises Exchange to Office 365 or you will have two mailboxes related in Outlook (one from the on-premises Exchange, the second from Office 365) and you utilize an RPC connection, on this case Outlook doesn’t use Modern Authentication (additionally used for MFA). In this case, your credentials are despatched to Office 356 as a substitute of token. To drive Outlook to make use of fashionable authentication for RPC connections, you must add the AlwaysUseMSOAuthForAutoDiscover DWORD parameter with the worth 1 to the registry key HKCUSoftwareMicrosoftExchange.

Set-ItemProperty -Path " HKCU:SoftwareMicrosoftExchange" -Name 'AlwaysUseMSOAuthForAutoDiscover' -Value 1 -Type DWORD -Force

Ensure Modern Authentication is enabled in your Office 365 account within the Office 365 Admin Center (Settings -> Services & add-ins).

If quite the opposite you wish to fully disable Modern Authentication in Outlook 2016/2019/365 (this authentication methodology must be disabled within the Admin Center), you must configure the next registry settings:

This methodology ought to assist to repair issues with consistently requested credentials in Outlook 2016/2019 with Office 365 mailbox related.

Set-ItemProperty -Path "HKCU:SOFTWAREMicrosoftOffice16.0CommonIdentity" -Name EnableAdal -Value zero -Type DWORD –Force
Set-ItemProperty -Path "HKCU:SOFTWAREMicrosoftOffice16.0CommonIdentity" -Name DisableADALatopWAMOverride -Value 1 -Type DWORD –Force
Set-ItemProperty -Path "HKCU:SOFTWAREMicrosoftOffice16.0CommonIdentity" -Name DisableAADWAM -Value 1 -Type DWORD –Force

Recreate Your Outlook Profile

If all of those strategies above didn’t show you how to eliminate the issue, attempt to delete and recreate your Outlook profile. You can create a brand new Outlook profile utilizing the Mail icon within the Control Panel or utilizing the outlook.exe /manageprofiles command.

If the Mail app icon is lacking in Control Panel, it may be restored .

Temporary Disable Your Anti-virus and Firewall Protection

Perhaps the Exchange connection drawback is brought on by your anti-virus or firewall software program. Try to quickly disable it and examine whether or not Outlook continues to prompts a password.

Poor Network Connection to Exchange Server

A poor and unstable community connection to the Exchange server and/or area controller can be a supply of periodic password requests in Outlook. You can take a look at the community efficiency utilizing the software.

Also examine the pc time, it ought to differ from the time on the area controller for not more than 5 minutes. If extra, examine the NTP time synchronization scheme in your area.

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