Forum AtoutFox : Re: VFP et Windows server 2012 R2   

mar. 10 décembre 2019, 11h54

GLS
France
atoutfox.public.association

Re: VFP et Windows server 2012 R2

Bonjour,
Vous pouvez peut être trouver la solution dans ce lien:

https://www.gerjon.com/citrix/xenappxendesktop/windows-2012r2-slow-and-slow-vfp-visual-foxpro-databases/

Le bas de la page me parait être une piste à creuser:
Disable Digitally sign communications (always)

When running Foxpro databases over the network you can experience poor performance. When disabling this settings the speed of copying files between server and workstation can increase dramatically. I’ve tested this (in a testenvironment on a domain controller) and difference in speed was obvious – even folder listings were visibly faster, and copying a 15 MB file from a share to a client desktop went from taking 20+ seconds to being almost instantaneous.

you can change these setttings via Group policy editor on the Windows 2012 R2 server

Open up Group Policy Editor, and right-click-and-edit Default Domain Controller Policy.
Go to Computer Configuration/Policies/Windows Settings/Security Settings/Local Policies/Security Options,
and set Domain member: Digitally encrypt or sign secure channel data (always) and Microsoft network server: Digitally sign communications (always) to Disabled.

After changing the setting reboot the server just to be sure it works and test it thoroughly! Beware that this setting is changed for all domain members when it is changed in the default domain policy!

Worth noting: this problem is for Domain controllers and shouldn’t be a problem on a non-domain-controller 2012 server. Beware on Windows Server Essentials 2012 these settings are also not set correctly! Full article can be found here: http://jrs-s.net/2013/04/15/windows-server-2012-slow-networksmbcifs-problem/

Disable “Secure Negotiate” on the Windows Server 2012

When running a Windows 2012 server and Windows 8 clients and and Foxpro applications run slow this can be caused by the “Secure Negotiate” feature that was added to SMB 3.0 for Windows Server 2012 and Windows 8. This feature depends upon the correct signing of error responses by all SMBv2 servers, including servers that support only protocol versions 2.0 and 2.1. Some third-party file servers do not return a signed error response. Therefore, the connection fails (intermittently).

you can disable this by running the following command on the Windows 2012 server and/or the Windows 8 clients:

Set-ItemProperty -Path “HKLM:\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters” RequireSecureNegotiate -Value 0 -Force

The full Microsoft KB article can be found here:: http://support.microsoft.com/kb/2686098

Cordialement
GLS

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