Hi linuxgeoff, I can't reproduce unfortunately. I can make a smb v1 server and mount it just fine on two vms running noble, both with 6.8.0-53-generic.
$ uname -rv 6.8.0-53-generic #55-Ubuntu SMP PREEMPT_DYNAMIC Fri Jan 17 15:37:52 UTC 2025 $ mount -l //192.168.122.62/sambashare on /home/ubuntu/share type cifs (rw,relatime,vers=1.0,cache=strict,username=ubuntu,uid=0,noforceuid,gid=0,noforcegid,addr=192.168.122.62,soft,unix,posixpaths,serverino,mapposix,acl,rsize=1048576,wsize=16384,bsize=1048576,retrans=1,echo_interval=60,actimeo=1,closetimeo=1) $ cp testdata.txt share/ $ ls -l share/ total 112 -rw-r--r-- 1 ubuntu ubuntu 111375 Feb 24 03:03 testdata.txt On server: $ ll sambashare/ total 120 drwxrwxr-x 2 ubuntu ubuntu 4096 Feb 24 03:03 ./ drwxr-x--- 5 ubuntu ubuntu 4096 Feb 24 02:44 ../ -rw-r--r-- 1 ubuntu ubuntu 111375 Feb 24 03:03 testdata.txt ubuntu@noble-aaa:~$ sha256sum sambashare/testdata.txt 9ec09af020dce3270ea76531141940106f173c7243b7193a553480fb8500b3f2 sambashare/testdata.txt Its all there. Could you try your attempted access, e.g. ls or cp a small text file to the share, and then run $ sudo dmesg and just copy the most recent lines with "CIFS:" and any error messages about the share? I'll have a look. Thanks, Matthew -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2099721 Title: File I/O access to SMB1 error - regression? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2099721/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs