# Troubleshooting | ByteSweep Docs

> Fixes for common ByteSweep problems: free space not going up, folders that show no size, licence errors, devices not appearing.

Canonical: https://bytesweep.app/docs/help/troubleshooting.html
Last updated: 2026-11-02

## Troubleshooting

The problems people hit most, and what to do.

Show me on

### On this page

- My free space didn't go up
- A folder shows no size
- The Clean button says Buy once
- Cleaning is paused
- My other device isn't showing up
- A page says it can't do something
- Still stuck

### My free space didn't go up

On Mac

Cleaned files stay on the same disk for 7 days so you can undo. Use **Delete for good…** to free the space now.

On Windows and Linux

Cleaned files are held for undo. Shorten **Keep cleaned files for undo** in Settings, or wait.

### A folder shows no size

On Mac

macOS kept it closed. [Allow Full Disk Access](https://bytesweep.app/docs/setup/permissions.html).

On Windows

It may need **Run as administrator**.

On Linux

It belongs to another user or the system, and ByteSweep sees what you can see.

### The Clean button says Buy once

Cleaning needs a licence, even in the trial. [Add your key](https://bytesweep.app/docs/setup/licence.html).

### Cleaning is paused

The licence hasn't been checked for 14 days. Connect to the internet, then press **Check now**(Mac) or**Check again**(Windows and Linux) in Settings →**Licence**.

### My other device isn't showing up

Same Wi-Fi, ByteSweep open on both. See [Send to your devices](https://bytesweep.app/docs/files/send.html#not-showing-up).

### A page says it can't do something

Some features differ by system. Fan control is on Mac only, and System Data and Sleep are Mac pages.

### Still stuck

Write to [support@bytesweep.app](mailto:support@bytesweep.app) with your system, your ByteSweep version and what you saw. ByteSweep keeps no logs, so a screenshot helps most.

### Ask AI about ByteSweep

It reads these docs, then answers.

Opens in a new tab. Your question goes to them, not to us. AI can make mistakes, so check anything important against these docs.

Updated 2026-11-02. Something wrong here? Write to [support@bytesweep.app](mailto:support@bytesweep.app).