Resolving erroneous network errors with personal vault

This is a known bug in the Android OneDrive app affecting Personal Vault. Many users have reported that even after proper authentication, the vault shows up empty and an erroneous "not connected to wifi/mobile data" message appears.

Here are some workarounds you might want to try.

Sign out, then sign back in and re‑enable Vault

clear app data/cache → uninstall/reinstall (on non‑Samsung phones) → sign in → enable Vault again.

Downgrade the App (Samsung devices)

Treat Wi‑Fi as Unmetered

Disable VPN or DNS-blocking apps (If you’re using a VPN, NextDNS, or ads blocker, temporarily disabling)

Check OneDrive's Background & Mobile Data Permissions

Hope this can help you a little.