Why did I receive a 'wrong previous session' or 'incorrect state' error?

You likely need to refresh your browser or restart Trezor Suite.

Note: We have separate guides if you see a "root fingerprint" error, or if your Trezor isn't being detected by your computer.

The "wrong previous session" and "device detected in incorrect state" errors are not uncommon when using a Trezor. They are nothing to worry about, and there are a few things you can try that will usually resolve the issue.

Make sure you only have one Trezor connected to your computer at a time.
If you see a Use Trezor here button, click it.
Refresh your internet browser and try the operation again.
Unplug your Trezor and plug it back in. You may need to enter your PIN again.
Close your Trezor Suite program and reopen it.
If none of the above suggestions resolve the issue, try restarting your computer.