In Sharepoint 2010, though you increase the file upload
limits from Central Administration (to more than 50 MB), you wouldn’t be able
to upload files more than 28MB. You would get an error whenever you try to
upload a file of size greater than 28MB.It is the default IIS configurations that
is giving these errors. When you are running Windows SharePoint Services on a
Windows Server 2008-based computer that has IIS 7.0, you would not be able to upload files that are larger than 28MB even though you have configured the
large file upload settings.
We will have to manually change some values in IIS to
fix this issue.
By default these are the values for upload limit in
SharePoint
Server 2010: 50 MB
IIS 7:
30 MB
Follow the below steps to fix this issue:
1)
Increase the SharePoint Item Upload Limit from Central Administration
Browse to Central Administration -> Manage Web
Applications ->Select web application -> General Settings -> Change
the Maximum upload size -> Click OK
2)
Increase the IIS 7 request limits
Navigate to IIS Manager -> Select the local host ->
Choose Request Filtering -> Edit Feature Settings -> Change the value for
Maximum allowed content length(Bytes)
3)
Increase the IIS7 connection timeout length (optional)
If you need to upload large files, there are chances that
the connection times out depending on your internet speed. If you want, you can
increase the connection timeout to a larger value. The standard is 120 seconds.
If you have users with low speed internet connections, increase this value.
Navigate to IIS Manager -> Select the Web Application
-> Manage Web Site -> Advanced Settings ->Expand Connection Limits
->Change Connection Time-out (seconds)
