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2003

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Fix Internet Explorer's 2 simultaneous download limit
source: Tek-Tips forums

11/01/00



At a glance:

regeditREGEDIT: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings

Name

Type

Value

MaxConnectionsPerServer

REG_DWORD

max simultaneous downloads you want (Default 2)

MaxConnectionsPer1_0Server

REG_DWORD

max simultaneous downloads you want (Default 4)

(add them if they don't already exist)

Okay, this bugs the hell out of me. When you run Internet Explorer, and try to download more than two files at a time, you have to sit and wait while you download only two at a time. Here's the problem as Microsoft see it (from KB: Q181145)

SYMPTOMS
When you try to download more than two files at the same time, the "Save This Program To Disk" option may not appear until one or more of the previous downloads is finished.

CAUSE
This behavior can occur because Internet Explorer versions 4 and 5 strictly adhere to the Request for Comment (RFC) specifications for HTTP 1.0 and HTTP 1.1, which state that clients must not create more than two (HTTP 1.1) or four (HTTP 1.0) simultaneous keep-alive connections per server.

RESOLUTION
To work around this issue, do not try to download more than four files at the same time.

Well NO SH*T!

For additional information about this issue, please see the following article in the Microsoft Knowledge Base: Q183110 INFO: WinInet Limits Connections Per Server.

Luckily, the other KB article it links to is a little more helpful: (from KB: Q183110):

You should only do this if absolutely necessary and then you should avoid doing standard Web browsing while these settings are in effect:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings

MaxConnectionsPerServer REG_DWORD (Default 2)
Sets the number of simultaneous requests to a single HTTP 1.1 Server

MaxConnectionsPer1_0Server REG_DWORD (Default 4)
Sets the number of simultaneous requests to a single HTTP 1.0 Server

These settings are made for a particular user and will have no affect on other users who log onto the machine.

Now we're talkin!

Add those registry values if they're not already present and enter whatever values you like, I entered 65536 (I'm kiddin', I did 8). You will now be able to download as many files simultaneously as your little heart desires. So what if it crashes someone's web-server, that's not your problem .

*NOTE: As usual, back up your registry before you mess with it. This "tweak" can also make your browser unstable and/or crash. And God only knows what it will do to web-servers.


Related Links:
Tek-Tips thread on this topic

Many users have had the same problems and some nice users suggested this solution

Microsoft Knowlege Base article: Q183110
Listing of the above registry entries along with related info and warnings

Microsoft Knowlege Base article: Q181145
The worthless article


Thank you to mtyldesley (TechnicalUser) and other contributors at Tek-Tips.






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