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Windows 2000 and IIS 5.0 - FTP transer errors

phstechsrv
phstechsrv asked
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Last Modified: 2010-04-13
We have setup Windows 2000 sp4 and IIS 5.0 to allow FTP transfers to our server.
I have set the IIS Directory Security to be set to Deny Access, and then I have
specified the IP addresses of those I will allow in.
Out of 25 IP addresses I have entered, they work except for 4.
These 4 are getting the following error.
"FTP Server Could Not Create A Client Worker Thread For User At Host"

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I once read an article on this problem:

http://www.chicagotech.net/msapps/ftp1.htm

It's exactly the situation you describe. I hope the solution from this article will work for you.

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Top Expert 2007

Commented:
Do you have a maximum amount of FTP users who can connect simultaneously ?

have you double checked the IP addresses ?
DHCP can cause  IP address changes. Best to use DNS where possible.

Could it be that these people have FTP blocked locally via a firewall somewhere ?

I hope this helps !
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