Bug 12003 - SMB 2 / 3 triggering Windows Error 0x8007003b while transfering larger files over slow connections
SMB 2 / 3 triggering Windows Error 0x8007003b while transfering larger files ...
Status: NEW
Product: Samba 4.1 and newer
Classification: Unclassified
Component: File services
4.4.4
x64 Windows 2012 R2
: P5 critical
: ---
Assigned To: Samba QA Contact
Samba QA Contact
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2016-07-01 09:47 UTC by Ruben Kelevra
Modified: 2016-07-21 20:11 UTC (History)
3 users (show)

See Also:


Attachments

Note You need to log in before you can comment on or make changes to this bug.
Description Ruben Kelevra 2016-07-01 09:47:43 UTC
Dear devs,

currently there seem to be a bug on newer SMB-clients, like Windows 10 or Windows Server 2012 R2, while receiving files from a smbd-server which runs at default config.

So on the network-side the Windows client tend to send a TCP RST while transferring. The Windows client shows up the error 0x8007003b. Else the transfer-window stalls for several seconds and bumps up the progress for several percents.

If the server capabilitys are reduced to "NT1" ("server max protocol") the issue disappears.
Comment 1 Jeremy Allison 2016-07-01 17:42:32 UTC
Are you sure this is a Samba bug ? See here:

https://social.technet.microsoft.com/Forums/en-US/968a04ed-472c-4265-a41e-c9e201ecb12e/error-0x8007003b-unexpected-network-error-at-copying-big-files-on-a-dfs-share?forum=winserverfiles

for the same error seen in a Windows -> Windows environment.
Comment 2 Ruben Kelevra 2016-07-02 12:25:31 UTC
Actually I'm pretty sure. We've replaced the thin client which was running the smbd with a windows 10 to access the domains dfs system with it, and the copy with of the same data over the same connection work fluently and very reliable.

We also tried to copy the same data from the samba server and this work as well.

So these ones work:

S2003 ---> smbd (default config)

2012r2 <--- win10

2012r2 ---> smbd (with maxp nt1)

This one not:

2012r2 ---> smbd (default config)
Comment 3 msokolowski 2016-07-18 19:38:38 UTC
I am also affected, I have problems with Windows 8/8.1/10 workstations trying to send "big" files (more than 5MiB) to my samba server, disabling 2.0/3.0 dialect in Windows solves the issue. It tends to happen over low performance links like 500kbps-5000kbps. Can somebody confirm where the issue is?
Comment 4 msokolowski 2016-07-18 19:40:10 UTC
Sorry for double post, there is very good description:

https://social.technet.microsoft.com/Forums/en-US/1208ca4a-47aa-451c-8aa7-04599527484c/windows-81-network-share-0x8007003b-error-copying-files?forum=w8itpronetworking

I've exactly the same symptoms.