You may receive a 404 error when uploading large files from InstantForum or InstantKB



This can occur if the file you are attempting to upload is larger than the allowed upload length specified within the InstantForum or InstantKB web.config file. To resolve this problem please follow the instructions linked below...

http://support.instantasp.co.uk/Knowledgebase/12590/Uploading-Large-Files-80mb-with-InstantForum-or-InstantKB

The default maximum upload size within both InstantForum & InstantKB for file attachments is 35mb.If you're attempting to upload a file larger than 35mb you will need to adjust the maxRequestLength attribute as detailed in the link above within your InstantForum or InstantKB web.config file.