Outlook sign in issues

David Ewer 71 Reputation points
2021-04-06T15:42:17.55+00:00

Hi there

Outlook is prompting to me to sign in to activate
I click the sign in option and a window open asking for my email address which I enter, this then disappears and I still get the prompt to activate. I have repeated the sign in steps a few times with the same problem each time.

On top of this Outlook is also asking for a password for my mailbox for it to download new emails. When I click the 'need password' button no Window opens where i can enter the password.

I have done some research on the second issue and have added both the EnableADAL registry and set to 0 and also the DisableADALatopWAMOverride and set to 1 but the issue persists.

On top of adding the reg keys I have repaired and reinstalled office with the same issue.

What else can I try?

Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
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  1. JeffYang-MSFT 6,241 Reputation points Microsoft Vendor
    2021-04-07T06:36:30.347+00:00

    Hi @David Ewer ,

    For Question One:

    Outlook is prompting to me to sign in to activate.

    Does this activation prompt issue only exist in Outlook? Will you receive the same prompt when using other Office programs? You could check your activation status via File > Office Account. About Office activate issue, please check:
    Activate Office
    Office repeatedly prompts you to activate on a new PC

    For Question Two:

    Outlook is also asking for a password for my mailbox.

    What's the version of your Outlook? (File > Office Account > About Outlook). Please make sure you have upgraded your Outlook to the latest version.
    What's the type of your account? POP, IMAP or Exchange?

    In order to exclude some other factors as much as possible, I would suggest you to try to reset your Outlook-related registry keys to restore Outlook to its original state. Please check the steps below:

    1. Exit Outlook and open the Registry Editor
    2. Navigate to: HKEY_CURRENT_USER\Software\Microsoft\Office\16.0
    3. Right-click the Outlook folder
    4. Rename it as Outlook1
    5. Restart your Outlook and add your email account to test

    (Note: Serious problems can occur if you modify the registry incorrectly. Before making changes, back up the registry to restore it in case something goes wrong.)

    If the password prompt issue still continues then. As I know, for Exchange email account, windows usually will cache its password to Windows Credential Manager. And problems with the password cache may cause this kind of prompt issue. So, please try to clear out the Outlook related credentials and see if it works: Control Panel > Credential Manager > Windows Credentials > Locate the set of credentials that has your email account in the name > Expand and click Delete> Restart Outlook Client and re-enter the password.

    Here is some more troubleshooting methods about password prompt issue, for your reference: Why does Outlook keep prompting for password.

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