Samba connection freezing after 1 min

[digitalnature]

Describe the bug
Samba connection freezes after some time and this appears to affect other apps too

To Reproduce
Steps to reproduce the behavior:

1. Create a SMB connection
2. Browse files from it with another app (I used IINA player)
3. After around 1 minute, Mountain Duck prompts a message to disconnect
4. Select "Cancel" (don't disconnect)
5. Connection freezes, and cannot disconnect, must restart

Expected behavior
Connection to not freeze

Desktop (please complete the following information):

• OS: macOS Tahoe
• Version 26.5

Log Files

seeing this in the log:

	2026-05-19 20:53:45,321 [Jukebox-3] WARN  audit.fs - Handle failure BackgroundException{class=class ch.cyberduck.core.exception.ConnectionCanceledException, file=null, message='Error', detail='Unknown application error. Cannot invoke "com.hierynomus.smbj.share.File.readAsync(long, int)" because "this.file" is null.', cause='java.lang.NullPointerException: Cannot invoke "com.hierynomus.smbj.share.File.readAsync(long, int)" because "this.file" is null'}

	2026-05-19 20:53:45,327 [NFS Worker Thread(4)] ERROR org.dcache.nfs.v4.AbstractOperationExecutor - NFS server fault: op: READ : NFS4ERR_IO : Unknown application error. Cannot invoke "com.hierynomus.smbj.share.File.readAsync(long, int)" because "this.file" is null.

	2026-05-19 20:54:53,415 [Jukebox-5] ERROR ch.iterate.mountainduck.sync.lock.BlockingPathLock - Interrupted waiting for lock
	java.lang.InterruptedException
		at java.base/.......

Additional context
Not sure if related, but after this happens many apps become unresponsive and they need to be force-quitted.