RWIN doesn't change under Win XP SP2

[Dime333]

Hi guys...i'm new to this forum. Days ago i formatted my hard drive and then i set rwin using tcp optimizer and everything was fine...then i installed cfosspeed and unchecked the "change tcp window". After the installation i rebooted and the rwin was the one i changed before...no problem till now.
Yesterday i started the analyzer and i noticed my rwin was set to 32768 and no matter which software i use (tcp optimizer - cablenut ecc) this value won't change. So i though it was cfosspeed limiting it and i uninstalled but the problem was not solved.
If i check the values in the register they're all right (remains the same i changed with the software) but when i start analyzer it says always 32768 rwin.
What is the problem?

Thanks

Edit: TTL and MSS-MTU will change normally but only rwin is stuck. And i'm running XP SP2, not Vista

Edit2: I tried backing up windows default settings but it's the same thing...

[Rollingstone]

Remove Cfos Speed and clean your Registry with Ccleaner.

Reboot and check RWIN with TCP Analyzer

[trogers]

Remove Cfos Speed and clean your Registry with Ccleaner.

Reboot and check RWIN with TCP Analyzer

And run WinSockFix to reset to Windows Default.

[Dime333]

I did everything you said...nothing has changed

[Rollingstone]

Download Cablenut www.softpedia.com/get/Tweak/Network-Tweak/CableNut.shtml and enter value for DefaultReceiveWindow to overwrite your RWIN.

[Dime333]

I found out kaspersky is blocking me from changing rwin...if i disable it i can chenge rwin normally...now i only have to find out which option has to be disabled. So it has nothing to do with cfosspeed.

Edit: Everything except "File Anti-Virus" and "Proactive Defence" blocks my rwin to 32768...suggestions?

[trogers]

I found out kaspersky is blocking me from changing rwin...if i disable it i can chenge rwin normally...now i only have to find out which option has to be disabled. So it has nothing to do with cfosspeed.

Edit: Everything except "File Anti-Virus" and "Proactive Defence" blocks my rwin to 32768...suggestions?

Check Kaspersky's website and see if they have any fix for this problem.

[Dime333]

I got it working disabling port 8080 from being used by mail anti-virus, web anti-virus, privacy control etc.
I have italian kaspersky so the options may be named differently from what i translate.
Anyway to disable this port go under configuration-traffic monitoring-port configurations and uncheck "Http general 8080".

[Henderson]

Thank you for this info! I've been stuck manually changing my rwin value in the registry, yet every test still showed it as the default value. I also use Kaspersky, and unchecking Port 8080 worked like a charm.

Thanks again for sharing your solution.