ISAM speed application issues since update to windows machines 7 (the opportunistic locking and SMB)

I have a client system that runs an ISAM application, which worked OK on the SBS 2011 machine and windows XP SP3 machines

The client has since upgraded its workstation to windows 7 x 64 workstations and ISAM application provider recommends that disable us opportunistic locking and also SMB v2 (e.g. force the workstation to communicate via SMB v1)

We followed the steps described in the various sections of Microsoft KB (2696547 & 296264), and as a result still having very slow network performance.

Then we found another reference external from the Microsoft site on disabling SMB digital signing, due to the use of SMB v1, and how that can sort out the problem with the speed of network problems.

The customer had it since and it has improved performance, but it's still not at the same speed, as it was on Windows XP clients.

is there a way to force windows 7 and SBS 2011 to use SMB 1 protocol and completely disable SMB 2, or we should create a new Member Server to use this ISAM application for sharing files.

the application is integrated in the line of business customers to change with a huge expense, but the seller request said that intend it to upgrade applications to use some form of plan of database in the future, but it is at least 12 to 18 months away.

Hello Paul,

Thanks for posting your query in Microsoft Community.

I understand that you have issues with Windows 7 and SBS 2011 uses SMB 1 protocols and completely disable SMB 2. So I would advice to follow the link below to post your query in the TechNet forums, because they have more expertise on this issue.

TechNet forums

http://social.technet.Microsoft.com/forums/Windows/en-us/home?Forum=w7itpronetworking

I hope this helps. Otherwise, feel free to write us again and we will be happy to help you.

Thank you

Tags: Windows

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