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WebDav IIS7 problems copying large files.

Posted on 2011-10-20
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Last Modified: 2012-05-12
I'm having problems with copying large files using webdav to an SBS 2008 (IIS7) server.

I've mapped a drive (to L:) and set up authentication so that ony authenticated users can access the folders.

WebDav works as planned on small files but I get the

"There is a problem accessing L:\",
"Make sure you are connected to the network and try again"

Network Error message on large files

Any clues on a fix would be greatly appreciated
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Question by:Dale303
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6 Comments
 
LVL 15

Expert Comment

by:achaldave
ID: 37002557
What is the client OS ? can you copy large file to non webdav share?

http://support.microsoft.com/kb/932045
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Author Comment

by:Dale303
ID: 37002693
Client is Windows 7. Same file works fine over VPN
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Author Comment

by:Dale303
ID: 37002890
Interestingly, I get "

An unexpected error is keeping you from copying the folder. If you continue to receive this error, you can use the error code to search for help with this problem.

Error 0x800700DF: The file size exceeds the limit allowed and cannot be saved.

<file name>

Try again Cancel"

Error trying to copy it back from SBS2008 to Win 7.

I've checked through http://support.microsoft.com/kb/900900 and chaged the registry key to



HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters\FileSizeLimitInBytes to 0xffffffff on both the Win 7 and SBS machines but still get the error.
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LVL 15

Accepted Solution

by:
achaldave earned 2000 total points
ID: 37003043
Is your server is configured to use sharepoint services?
Check these articles
http://support.microsoft.com/kb/944981/en-us
http://support.microsoft.com/kb/925083
http://jamesrossiter.wordpress.com/2011/04/04/allow-larger-file-downloads-than-50mb-from-sharepoint-fix-error-0x800700df/

For copying from 2008 to windows 7
Try disabling TCP auto tuning on windows 7 machine,  run from command prompt as administrator and reboot the windows 7 machine
netsh int tcp set global autotuninglevel=disabled


0
 

Author Comment

by:Dale303
ID: 37003507
SBS 2008 has Sharepoint 3.0 on it but the website/server I set up for Webdav is separate from it and is running under the Default App Pool.

Anyway, I've been through...
* http://support.microsoft.com/kb/944981/en-us anyway mainly because it will come in handy for Sharepoint

*http://support.microsoft.com/kb/925083
I modified my web.config file for the webdav site and now looks like this... (note the extra 0 to bump it up from 50 to 500MB)...

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <security>
            <requestFiltering>
                <requestLimits maxAllowedContentLength="524288000"/>
            </requestFiltering>
            <authentication>
                <windowsAuthentication enabled="true" useKernelMode="true" />
            </authentication>
        </security>
    </system.webServer>
</configuration>

Anyway, it seems I can now upload to the server but still having that download issue.
*http://jamesrossiter.wordpress.com/2011/04/04/allow-larger-file-downloads-than-50mb-from-sharepoint-fix-error-0x800700df/
is the same tip as my http://support.microsoft.com/kb/900900 link so that was already done but this tip is not working on my Win 7 machine. Any other ideas?
0
 

Author Comment

by:Dale303
ID: 37003693
nevermind... PC reboot seems to have fixed it
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