Google Slides keeps asking for your password on iPhone because the app cannot keep a clean sign-in session with your Google account. That usually means a stale login token, a broken app cache, or an account sync issue inside iOS. This guide shows you the fastest fix first, then walks through the exact steps that stop the repeated password prompts for good.
Quick fix
The single most likely fix is to remove Google Slides from your iPhone, restart the phone, then install it again from the App Store and sign in once more. That clears the bad session data that keeps forcing the password prompt. If the app still asks again after that, the problem is in the Google account connection on your phone, not the app itself.
Why this happens
Google Slides on iPhone relies on Google Sign-In, Safari sign-in data, and iOS account services to keep your session active. If that stored login gets corrupted, the app cannot trust the saved token and keeps asking for your password. This also happens when iPhone storage is tight, background activity is restricted, or a security setting blocks account refresh in the background.
How to fix it
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Remove and reinstall Google Slides.
Press and hold the Google Slides icon on your Home Screen, tap Remove App, then tap Delete App. Restart your iPhone, open the App Store, install Google Slides again, and sign in with your Google account. A clean reinstall clears the local sign-in files that trigger repeated password requests. -
Sign out of Google in the app and sign back in.
Open Google Slides, tap the profile icon in the top-right corner, then tap Manage your Google Account or Sign out if that appears. Close the app fully, reopen it, and sign in again with the same account. If your account is stuck in a half-signed-in state, this resets the session without touching your files. -
Clear Safari website data for Google sign-in.
Open Settings > Safari > Advanced > Website Data, then search for google and remove the matching entries. Google apps on iPhone use Safari web data for authentication, so a broken sign-in cookie keeps looping the password request. After clearing the data, open Google Slides again and sign in from scratch. -
Turn off private relay, VPN, or content blockers for the sign-in test.
Go to Settings > VPN and disconnect any VPN, then open Settings > Safari > Extensions and turn off content blockers for the moment. Security tools that intercept login pages break Google’s account handoff on iPhone. Test Google Slides again after disabling them, and leave them off if the password prompt disappears. -
Check your Google account security alerts.
Open Safari and go to myaccount.google.com/security. If Google shows a prompt about a new login, suspicious activity, or a blocked sign-in, approve the device and change your password only if the account itself is at risk. If Google has flagged the session, the app will keep asking for credentials until the account trust issue is cleared. -
Reset the iPhone network settings if every app is failing to stay signed in.
Open Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings. This does not erase your photos or apps, but it does clear stored Wi‑Fi, VPN, and connection settings that can interfere with login sessions. After the restart, reconnect to Wi‑Fi and test Google Slides again. If that fixes it, the password loop was caused by a broken network handoff rather than the app itself.
Common error messages
“Couldn’t sign you in”
This means Google Slides reached the login page but the authentication handoff failed before it could finish.“Your session has expired”
This means the app received a stale sign-in token and is forcing a fresh login because the saved one is no longer valid.“Something went wrong”
This is the generic error Google shows when the app, Safari sign-in data, or account security check breaks during authentication.“This browser or app may not be secure”
This means a VPN, content blocker, or privacy setting is interfering with Google’s login flow on the iPhone.
When this means it’s a bigger problem
If Google Slides keeps asking for your password after a clean reinstall, after clearing Safari website data, and after signing in successfully on the same account in Safari, the problem is no longer local to the app. At that point, the account itself is blocking the session or your iPhone has a deeper system-level sync problem, and you should contact official Google support or your device administrator if the account is managed.
Helpful answers
Frequently Asked Questions
Will reinstalling Google Slides delete my presentations or account data?
No. Reinstalling Google Slides removes the app and its local sign-in files from your iPhone, but your presentations stay in Google Drive. When you sign back in, everything tied to your Google account loads again. If you keep files stored only offline on the device, make sure they’re synced before you delete the app.
What if Google Slides still asks for my password after I clear Safari website data?
The next place to check is your Google account itself. If Google is blocking the session for security reasons, the app will keep looping the password prompt no matter how many times you sign in. Open Google’s security page, approve any login warning, and verify the account is not locked behind a verification step.
Does turning off VPN or content blockers affect only Google Slides?
No. Disabling a VPN, private relay, or content blocker changes how Safari and other apps reach secure login pages on your iPhone. That’s why you should turn them off only long enough to test Google Slides. If the password prompt stops, the login flow is being interrupted by your privacy or network filter setup.
How do I undo the fix if I reset my iPhone network settings?
You can restore the network setup by reconnecting to Wi‑Fi, re-entering any VPN profile, and turning your preferred network features back on. Reset Network Settings does not remove your apps or photos, but it does erase saved Wi‑Fi passwords and VPN entries. You need to set those back up manually afterward.
Is Google Slides on iPhone tied to Safari sign-in data?
Yes. Google Slides uses Safari-based authentication on iPhone, so corrupted website data can break the login handoff even when the app itself looks fine. If you want a deeper look at why browser data affects Google sign-in, see Google Sign-In On iPhone