MacOS High Sierra 10.13.2 causing Finder crash

Since updating to MacOS High Sierra 10.13.2 (from 10.13.1), I cannot connect to my NAS unit or other computers on the network, and in attempting to do so, Finder crashes and will not relaunch. I cannot find a fix to this problem, and as a consequence, my MacBook Pro (with TouchPad 2016) has become an island. I share files between computers on the network as part of my work process so this is a pretty big issue.

MacBook Pro (15-inch, Late 2016), iOS 10.3.2

Posted on Dec 7, 2017 9:05 PM

Reply
Question marked as Top-ranking reply

Posted on Jan 9, 2018 9:02 AM

The problem seems to stem from defaulting the connection to SMB version 3, which is somehow broken. Changing the connection string to CIFS:// reverts to the much slower SMB version 1. The solution to maintain relatively speedy connections and avoid the bug is to set the default connection to SMB version 2, instead. This will also maintain compatibility with Windows servers where SMB1 is disabled.


This answer from the JAMF forums seems to do the trick. Enter these two lines in the terminal. You will be asked for your admin password:

sudo echo "[default]" >> /etc/nsmb.conf sudo echo "protocol_vers_map=2" >> /etc/nsmb.conf

157 replies

Jan 4, 2018 10:03 AM in response to andy72

This appears to help my (very similar, frustrating situation)! I did not restart in safe mode & restart again... but had just restarted from the complete "finder freeze" with RSB (rainbow spinning ball). I connected using the cifs:// instead of smb:// and it seems to be working WONDERFULLY. THANK YOU very, very much!

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

MacOS High Sierra 10.13.2 causing Finder crash

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.