---
title: "Troubleshooting"
---

## A device looks out of sync

Nothing is lost. Every device keeps a full copy of your notes on its own
disk, [Cloud Sync](/sync-across-devices) or not. Close and reopen the app
to force it to reconnect.

## Restoring from a backup

On a Mac, you can put back a backup you made as described in
[Where your notes live](/where-your-notes-live#back-up-your-notes).

1. Right-click any empty space around your notes.
2. Choose **Restore from Backup…**.
3. Choose your backup file.
4. Read the warning, then choose **Restore**.

Mimir checks the backup before it changes anything. Your notes from before
the restore stay in a copy next to the database.

Restoring a backup isn't available on iPhone and iPad.

### With Cloud Sync on

A restore replaces your notes on every device, and your eight words stay
the same. Each of your other devices takes in the restored notes the next
time it connects to Cloud Sync, and shows a message when it does.

Anything written after the backup is lost on every device. That includes
notes written on a device that was offline at the time.

### If Mimir doesn't open

Without Cloud Sync, you can put a backup back by hand:

1. Open the folder described in
   [Where your notes live](/where-your-notes-live).
2. Delete `mimir.db-wal` and `mimir.db-shm`, if they're there. They belong
   to the current database and can damage the backup you put in its place.
3. Replace `mimir.db` with your backup copy. Rename the copy to `mimir.db`
   if it has a different name.
4. Open Mimir.

With Cloud Sync on, don't put a backup back by hand. Mimir reconnects as it
opens and brings back every change made since the backup. Email
[support@justmimir.com](mailto:support@justmimir.com) instead.

## After a crash

If Mimir crashed or hit an unexpected error, it shows a message the next
time it opens, with a few choices: view what was logged, report it by
email, or (on desktop) save a diagnostic bundle to attach. The error log
never contains your note text — only what kind of error it was, the app
version, and which actions you'd made just before it (also without their
text).

## Reporting a problem

Report a bug, or anything Mimir did that you didn't expect, at
[bugs.justmimir.com](https://bugs.justmimir.com). If a crash prompted you,
email [support@justmimir.com](mailto:support@justmimir.com) instead and
attach the diagnostic bundle it offered — it never contains your notes.