Wondershare Repairit
Email Repair

Perfectly repair and recover corrupted Outlook PST & OST files.

  • Fix all Outlook Email issues on Windows and Mac in various scenarios.
  • One trick to fix corrupted PST & OST files in Outlook.
  • Restore Outlook Emails deleted for a long time and extract important Email messages, folders, calendars, etc.
  • Perfectly compatible with Windows & Mac devices.
email repair

How to solve Outlook Windows Security Keeps Popping Up issue?

Many Outlook users have recently complained that "Windows Security Microsoft Outlook keeps popping up." The prompt will reappear even if they choose to cancel or log in. Recent Windows Outlook updates and Outlook settings may be to blame if your Outlook app repeatedly requests your password.

microsoft outlook asking for password

One of the most popular email client systems for business communication is Outlook. Users of Outlook still occasionally run into this problem. You can therefore find a variety of solutions to the problem in this guide.

Part 1: Reason Behind Outlook Keep Asking For Password Repeatedly

When you face this issue, there can be a number of reasons. The most common reasons behind Outlook keep asking for password repeatedly are as follows:

Reason 1: Outlook Settings

Your Outlook app's settings may occasionally be the source of the issue.

Reason 2: Windows update or upgrade

In some cases, windows updates or upgrades can reset your password set preferences for certain apps that can cause the issue.

Reason 3: An inability to update your Password

In rare cases, Outlook will be unable to update your password, so you should expect to be prompted for one.

Part 2: General Error Variations Faced By Users

There are many common triggers for this problem, but users have mainly been faced with the following variations of this error:

Variation 1: Outlook keeps asking for password after enabling MFA

Many users continue to be prompted for a password after enabling MFA. In this case, enabling Modern Authentication in the Office 365 tenant should be sufficient.

Variation 2: Microsoft Security Outlook keeps popping up even though it is correct in Office 365

Manually disconnect the Microsoft account from the Office 365 package and then reconnect it.

Variation 3: Windows Security Microsoft Outlook keeps popping up for windows 11/2016/2019

To solve the issue, reset your Outlook password, then set the option to remember the password next time.

Part 3: Solutions To Outlook Windows Security Continuously Popping Up Problem

Have a look at different solutions to help you get rid of this problem in Outlook.

Solution 1: Disconnect your Microsoft Account from Office Apps

If your Outlook window keeps popping up, the following steps are as follows to fix Outlook password errors.

Step 1 Press Windows+I to Open the Setting window and Select Accounts.

system setting window

Step 2 Now choose Emails & Accounts.

select emails & accounts from accounts window

Step 3 Scroll down to locate the “Account used by other apps.” Select your Outlook account email address.

select outlook account to disconnect

Step 4 Disconnect the Outlook account. Restart outlook.

Check if this issue persists. If not, try the next solution.

Solution 2: Reset Login settings for Outlook application

Step 1 Type “Credential Manager” in the search bar in Start and press Enter.

search credential manager

Step 2 Select Windows Credentials from Control Panel.

search windows credentials

Step 3 Find the stored credentials referencing Office 365 or Microsoft Outlook email addresses.

search microsoft outlook email address

Step 4 Click on Remove from vault and then click Yes to confirm the removal.

click remove

Perform the steps repeatedly until you remove all the credentials associated with your email address. Then, check if the issue is resolved.

Solution 3: Check the credential settings

Step 1 Open Microsoft Outlook Application and Go to File.

go to file menu

Step 2 Select Account Settings.

select account settings

Step 3 Choose an Exchange account and then click the Change button and go to More Settings.

select more settings in change account window

Step 4 Select the Security tab.

Under the User Identification, check the Always prompt for logon credentials is not selected.

check the security tab

Step 5 If unchecked, then click Ok and restart Outlook.

Solution 5: Enable the remember password

Step 1 Open the Outlook app and click on the File tab, then select Account Settings.

choose account settings

Step 2 Double-click the account under the Email Window. A new window will appear.

check the remember password

Step 3 Ensure that the Remember Password is selected. Restart Outlook.

Solution 6: Outlook not configured to use NTLM Authentication

Step 1 Open Microsoft Outlook. Under the File tab, select Account settings.

select account settings under account settings

Step 2 Select Exchange Account in the Email tab.

And then click Change and More settings and then go to the Connection tab.

go to connection tab

Step 3 Click the Exchange Proxy Settings.

And under Proxy Authentication settings, pick NTLM Authentication.

microsoft exchange proxy settings

Step 4 Click OK to apply changes to Microsoft Outlook.

You must restart Outlook for the new settings to take effect.

If all of these solutions above did not help you get rid of the problem, then this bonus tip will be a good solution for your problem.

Part 4: Keep Your Corrupt Outlook Emails Fixedhot

In the unfortunate event of corruption in Outlook email files, several scenarios may play out, each indicating a different aspect of the issue. Users may experience error messages when attempting to open Outlook, or find that the application crashes unexpectedly. Sometimes, emails fail to send or receive, despite a stable internet connection. In other cases, irregularities in email formatting or an inability to find older emails that should be stored within the Personal Folders (PST files) can also signify corruption. To address these issues, repair tools or professional IT assistance may be required to restore data integrity and functionality.

You can use Wondershare's Repairit for Email to resolve your Outlook corruption issue, including the issue "windows security outlook keeps popping up". The fixing process is quick and simple. Due to its support for both the OST and PST file formats, it outperforms the competition.

  • Repair damaged PST & OST Files in Outlook in all Email corruption scenarios, such as hard disk crashes & bad sectors, virus attacks & tojan horse, outlook corruption & malfunctions, improper shutdown procedure, etc.

  • Restore Outlook Emails deleted for a long time and extract the Email messages, folders, calendars, etc. within seconds.

  • Repair corrupted Emails and restore deleted Emails with a 100% success rate.

  • Repair Emails in bathes without size limits and support to preview all of them before saving.

  • Compatible with Windows 7/8/8.1/10/11, Windows Server 2012/2016/2019, and MacOS X 10.11~ MacOS 12 (Monterey).

To use Wondershare Repairit for Windows, follow these steps:

Step 1 Upload the file you want to repair.

Start the Repairit application on your Windows PC. On the interface, choose the Select File option. Corrupt emails can now be uploaded. Select one or multiple emails.

upload the file

After choosing a file, a popup window asking you to choose files from various locations will appear. A single email or a list of email addresses can be entered. By selecting "Find," you can look for corrupt emails in various places or if you already know where they are.

add file for repair

Step 2 Start repairing the uploaded files.

After you've inserted the emails, click the blue "Repair" button. Within seconds, Repairit will quickly repair your corrupt emails.

start repairing the uploaded files

Step 3 Preview and save the fixed emails.

After the repair process is complete, the left panel will show all of the fixed emails. Double-click on the email file to preview the contents and save it to a chosen location.

preview and save repaired files


It can be difficult to figure out why the Outlook window security keeps asking for the password login information. The solutions mentioned above address the most common causes. You can stop constant password popups from interfering with your work by adhering to the instructions for your particular device.

If the problem is still present, Wondershare Repairit for Email can be very helpful. It is an industry-exclusive Outlook repair tool for repairing emails. It helps competitors by supporting both Windows and Mac systems and the PST and OST file formats.