Outlook Keeps Asking for Your Password: How to Stop It

Outlook keeps asking for your password even though you just typed it, hit enter, and watched an email send fine minutes later — then the box pops up again like nothing happened. It's one of the most common Outlook complaints in 2026, on classic Outlook and new Outlook alike, and it survives password resets, reboots, and more than a few colorful words at the screen.

The good news: the causes behind a repeating Outlook credential prompt are a short, known list, not a mystery. Stale cached credentials, an MFA or Conditional Access policy re-checking your sign-in, a broken modern-authentication token, or — rarer, and the last resort — a corrupted Outlook profile. This guide walks through each one, in order from the fix that changes the least on your machine to the one that rebuilds your whole profile, so you don't reach for a hammer when a small clean-up would do.

What does it mean when Outlook keeps asking for your password?#

The prompt itself is Outlook telling you that whatever credential it's holding for your account — a cached password, an authentication token, a session cookie — no longer satisfies the mail server. It isn't personal, and it usually isn't about you mistyping anything; the copy Outlook is checking against is the one that's wrong, not the one you just entered.

Look at the status bar at the bottom of the Outlook window while this is happening. If it reads "Need Password," Outlook has already tried the credential it has on file and been rejected — that's your cue to go straight to the causes table below rather than retyping the same password five more times. If it reads "Disconnected" or "Working Offline," the problem may not be credentials at all: Outlook has lost its connection to the server, and a password prompt is a side effect of that broken connection, not the root cause.

There are two different kinds of credential Outlook can be checking. Legacy "basic" authentication stores a plain username and password, cached locally in Windows Credential Manager. Modern authentication (OAuth, used by every Microsoft 365 account today) stores a short-lived access token instead, refreshed automatically in the background — and it's that automatic refresh that Microsoft 365's MFA and Conditional Access policies can interrupt, which is why the loop is far more common on work accounts than on a personal Outlook.com address.

Why does Outlook keep prompting for your password? (the causes, side by side)#

Six things cause this loop in practice, and most quick tutorials only cover one or two of them. Confirm which one you have before you touch any settings — clearing Credential Manager doesn't help a policy-driven prompt, and disabling a security setting doesn't fix a stale cache.

Fix 1: Clear cached credentials in Windows Credential Manager#

This is the right first move when the cause is a stale or outdated cached credential — most often right after you changed your password with the provider or it expired on schedule. It's also the fix most tutorials lead with, which is exactly why it gets over-applied: it does nothing for a policy-driven MFA loop, covered in Fix 2. This applies to Windows; on Mac, the equivalent tool is Keychain Access.

1. 1

   Close Outlook completely

   Quit Outlook fully — not just the window; check Task Manager for a lingering OUTLOOK.EXE process — so Windows isn't holding the credential open while you edit it.

2. 2

   Open Credential Manager

   Search "Credential Manager" from the Start menu, or go to Control Panel > User Accounts > Credential Manager, then select Windows Credentials.

3. 3

   Find the entries for your account

   Look for entries starting with MicrosoftOffice16_Data:SSPI, Outlook, or your mail server's name, tied to the specific address that keeps prompting.

4. 4

   Remove only those entries

   Expand each one and click Remove. Leave entries for other accounts or apps alone — clearing everything can trigger re-authentication in Teams and OneDrive too.

5. 5

   Reopen Outlook and sign in fresh

   Launch Outlook, enter the current password when prompted, and confirm the box to save it. If the prompt returns within the same session, move to Fix 2.

Fix 2: Reset modern authentication and check your security settings#

This is the fix for the more common 2026 case: a Microsoft 365 or Exchange work account on modern authentication, where the loop is caused by a security setting, an expired token, or a Conditional Access policy rather than a plain stale password. It covers the largest share of "Outlook keeps asking for password" reports on work accounts.

1. 1

   Uncheck "Always prompt for logon credentials"

   In Outlook, go to File > Account Settings > Account Settings, double-click your account, click More Settings, open the Security tab, and clear that box if it's ticked.

2. 2

   Sign out of Office everywhere and back in

   Close Outlook, then in Windows Settings > Accounts > Access work or school (or Control Panel > Mail > Profiles), remove and re-add the connected account to force a fresh token.

3. 3

   Run the Microsoft Support and Recovery Assistant

   Microsoft's free SaRA tool diagnoses and resets Outlook sign-in and profile issues automatically, and catches token problems a manual reset can miss.

4. 4

   Ask IT whether a Conditional Access policy is the cause

   On a managed work account, a sign-in-frequency or device-compliance policy can force periodic re-authentication by design. If the prompt is regular rather than constant, this is very likely it, and no client-side fix removes it.

Fix 3: Rebuild your Outlook profile (the last resort)#

Reach for this only after Fix 1 and Fix 2 both fail to hold, because it's the most disruptive option here — though your mail itself is safe. On an Exchange, Microsoft 365, or IMAP account, your messages live on the server, not in the local profile, so a new profile re-downloads them rather than losing them.

1. 1

   Close Outlook

   Make sure it's fully closed, including any background process, before you touch profile settings.

2. 2

   Open the Mail control panel

   Search "Control Panel" > Mail (32-bit), or search "Mail (Microsoft Outlook)" in Windows Settings. Click Show Profiles.

3. 3

   Add a new profile

   Click Add, name it something distinct like "Outlook2," and walk through adding your email account as if for the first time.

4. 4

   Set it as the default and test

   Under "Always use this profile," select the new one, then open Outlook. Send yourself a test email and leave it running for a day to confirm the prompt is actually gone.

5. 5

   Remove the old profile once you're confident

   Back in Show Profiles, delete the previous profile only after the new one has held up without prompting — keep it around a few extra days if you're unsure.

How do you tell which cause you actually have?#

• You changed your password recently, or IT reset it for you — most likely stale cached credentials (Fix 1).
• "Always prompt for logon credentials" is ticked and you don't remember checking it — a leftover setting (Fix 2).
• The prompt repeats on a predictable schedule (once a day, once a week) rather than constantly — a Conditional Access sign-in-frequency policy (Fix 2, and a call to IT).
• Teams, OneDrive, or other Office apps on the same machine started prompting around the same time — a broken shared identity token (Fix 2).
• The status bar says "Disconnected" more often than "Need Password" — a connection problem, not a credential problem; check File > Work Offline before anything else.
• You've done Fix 1 and Fix 2 correctly and the loop still returns within a day or two, on this profile specifically — a corrupted profile (Fix 3).

How do you prevent Outlook from asking for your password again?#

None of this is fully preventable on a work account, because a Conditional Access policy re-checking your session is working as intended, not malfunctioning. But a handful of habits cut how often you hit the loop and make it faster to fix when you do.

• Update Outlook and Windows promptly — several credential-loop reports trace back to a build with a broken token refresh, fixed in the next update.
• When you change your password with the provider, restart Outlook immediately rather than letting it keep failing silently in the background.
• Don't dismiss MFA push notifications without approving or denying them — a stuck approval request can look identical to a credential prompt.
• If you manage the tenant, keep sign-in-frequency policies reasonable; an aggressive setting turns a security control into a daily productivity complaint.
• Keep one reliable sign-in method, like an authenticator app rather than SMS alone, so an MFA hiccup is never the reason you get locked out mid-fix.

The mechanism behind most of this — Outlook silently holding a credential or token the server has already invalidated, then failing quietly instead of stating clearly what broke — isn't unique to Microsoft's client. AI Emaily connects to Outlook, and to Gmail, iCloud, Fastmail, Proton, and any IMAP inbox, through the same OAuth flow, but it surfaces a connection's real status plainly rather than leaving you guessing between "Need Password" and "Disconnected," and reconnecting a lapsed account is a single sign-in rather than a Credential Manager cleanup or a profile rebuild. We build AI Emaily. If this sign-in loop is a recurring headache on a specific account, moving that inbox into a client built around one clear connection state per provider is a smaller fix than any of the three above.