Posted by: Jeremy Benisek (CyberAxe) Don't Panic Business Technologies | September 8, 2011

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

When using SharePoint or WebDev on Vista SP1+ or Windows 7 SP1+ you get “Error 0x800700DF: The file size exceeds the limit allowed and cannot be saved.”

Microsoft has changed the max file size download from WebDev to 50MB.
This change is to combat DoS attacks but is a critical change for large file users.

This link provides the Register Edit required to change the setting back. However you should only do this if you are behind a Network Firewall that can prevent DoS attacks.

Security Update 896426 (MS05-028)

I will also post this and comments at jbenisek wordpress dot com if more issue or question arise.

SharePoint 2010, SharePoint 2007. Open as Windows Folder.

This applies to Vice Versa Pro, IE7, IE8, IE9, Windows 7 SP1 – 32-bit/64-bit, Windows Vista SP1 – Sp2, XP SP1. This was introducted in an update in July so yes we understand it use to work and now it doesn’t.

Also shows on Vista/XP as Cannot Copy FileName: Cannot read from the source file or disk.

Please comment below.

Solution is as follows

ImportantThis section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756                                         (                        )        How to back up and restore the registry in Windows

To resolve this issue, follow these steps:

  1. Click Start, click Run, type regedit, and then click OK.
  2. Locate and then click the following registry subkey:
  3. In the right pane, right-click the FileSizeLimitInBytes value, and then click Modify.If you cannot see the FileSizeLimitInBytes value, right-click the blank space in the right pane, click New, click DWORD Value, type FileSizeLimitInBytes, and then click OK.
  4. In the Edit DWORD Value box, click to select the Decimal option. In the box under Value data, type a value that is larger than the size of the file that you want to download. Click OK.Note The default value for the file size limit is 50000000 bytes.
  5. Quit Registry Editor. Restart the computer.

This above content is Copyrighted and owned by Microsoft.


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