# Legacy macOS zsh Background Item Notification

## What the notification means

After a Mac first upgrades to FileWave Client 15.3.0 or later, macOS may display **"zsh is now running in the background"**. This is a legacy notification associated with FileWave using the system `zsh` shell for client scripting.

## What to do

No remediation is normally required. Confirm that the notification appears after the FileWave Client upgrade and that `zsh` is being launched by the installed FileWave Client. The notification was expected to appear once on each Mac during the transition to 15.3.x.

<p class="callout info">**If the notification repeats**  
Record the FileWave Client and macOS versions, capture the notification, and check whether another management tool or script is also launching `zsh`. Contact FileWave Technical Support if the source is unclear.</p>

## Related content

- [FileWave Version 15.3.1 (Unsupported)](https://kb.filewave.com/books/downloads/page/filewave-version-1531-unsupported "FileWave Version 15.3.1")