Hello again, Wes.
Reference our brief telephone conversation last week (while you were in
TX). I finally had some time to sit down and send you a
follow up email request. I have two immediate issues for you:
1. VFP9 Performance
Our software (an ERP), which is written in VFP9, performs very poorly
over the network from a virtualized Windows 2012 server to a workstation
running either Windows 7 or Windows 8. There is a big delay opening
some screens. However, when our software is run directly on the
server, or over RDP, the same screens open and perform 10 times faster,
or more. Something is making network performance very poor for the
VFP software. There are no issues with other softwares, by the
way.
The network is 1Gbps. No anti-virus software is running. The
workstations and server have plenty of RAM and horsepower.
2. VFP9 crashes
At a couple of different installations, some users run the VFP9 software
directly over the LAN, while other users simultaneously run the VFP9
software via terminal services (RDP). The RDP users randomly
experience crashes, while the LAN users have no such problems. The
RDP users connect to a terminal server (Server 2008).
When the crashes happen, the Event Logs show two errors, one right after
the other:
· Event ID 1000 (Application Error).
The faulting application is our VFP9 software, and the faulting
module is one of the following: VFP9R.dll; or mscrv71.dll; or
ntdll.dll; or "unknown"
· Event ID 1005 (Application Error).
The note states, "Windows cannot access the file for one of
the following reasons: there is a problem with the network connection,
the disk that the file is stored on, or the storage drivers installed on
this computer…"
The IT Specialists have tested and re-tested the network infrastructure
and its components. No problems are ever detected.
Both of these issues seem to point at VFP9 having problems over modern
network connections.
Has anyone else had, or heard of problems like this?
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