Microsoft 365 Error Codes

How to Fix Error 2602 When Microsoft Apps Fail to Sign In on Android

John Wilson Sep 28, 2026 870 views

Question details

Users are unable to sign into Microsoft applications on Android devices due to a network timeout error.

How to Fix Error 2602 When Microsoft Apps Fail to Sign In on Android

Product: Microsoft 365, Outlook, OneDrive, Teams
Device & OS: Android
Scenario: Attempting to sign into Microsoft applications on an Android smartphone or tablet when Wi-Fi and mobile data are otherwise functioning normally.
Observed behavior: The application fails to complete the login process and displays Error 2602, indicating a network request timeout.

Before you start

Ensure your Android device is connected to a stable internet connection and verify that your Microsoft account credentials are correct by testing them in a standard mobile web browser.

Solution 1Recommended

Clear App Cache and Reset Your Microsoft Account

Clearing the local app data and refreshing your account connection locally often resolves the authentication timeout issue causing Error 2602.

Microsoft applications on Android cache login tokens and network configurations to speed up load times. When these tokens become corrupted or out of sync, the app may fail to communicate with Microsoft servers, resulting in a timeout.

Open Android App Settings

Go to your Android device's Settings app and tap on 'Apps' or 'App Management' to view your installed applications.

Clear Cache and Data

Find and select the affected Microsoft app (such as Outlook, OneDrive, or Teams). Tap on 'Storage & cache', then select 'Clear cache' followed by 'Clear storage' or 'Clear data'.

Remove the Account

Go back to the main Settings menu, tap on 'Passwords & accounts' or 'Users & accounts'. Locate your Microsoft account from the list and select 'Remove account'.

Re-add the Account

Open the Microsoft application again. You will be prompted to sign in from scratch. Enter your email and password to re-authenticate.

Clear App Cache and Reset Your Microsoft Account

Authentication Refreshed: Removing and re-adding the account forces a fresh authentication token, bypassing previous network timeout glitches.

Solution 2

Test Alternative Networks and Update System

Rule out network restrictions or outdated software that might be actively blocking Microsoft services from authenticating.

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Frequently Asked Questions

What causes error code 2602 in Microsoft Android apps?

Error 2602 usually occurs due to a network request timeout during the authentication process. This can be caused by corrupted app cache, aggressive network security settings like VPNs or ad blockers, or an outdated application version.

Will clearing my app data delete my Microsoft account files?

No, clearing the app data or cache for OneDrive, Outlook, or Teams will only remove local temporary files and reset the app to its default state on your phone. Your actual files and emails remain safely backed up on Microsoft's cloud servers.

Why does error 2602 persist even when my Wi-Fi is strong?

Even if your Wi-Fi is fast, specific router firewalls, private DNS settings, or ISP routing issues might be blocking the exact ports or URLs Microsoft uses for sign-in verification. Switching to mobile data helps isolate whether the network is the root cause.

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