Solution to phpcms upload error 404

What to do if phpcms upload error 404 occurs? 404 error occurred during phpcms v9 attachment uploading process

Customers reported "Upload Error 404" when uploading attachments using the multi-file upload function of phpcms v9. It is estimated that there is an error in the instantiation path.

Open /phpcms/modules/attachment/functions/global.func.php

Change

upload_url:"'.$upload_path.'index.php?m=attachment&c=attachments&a=swfupload&dosubmit=1",

to

upload_url:"'.APP_PATH.'index.php?m=attachment&c=attachments&a=swfupload&dosubmit=1",

still reports a 404 error, consider The script times out because the file is too large. After modifying the php.ini file and changing max_input_time and max_execution_time to infinite, the error still persists.

At this time, it is considered to be an IIS problem.

Open the IIS manager on the server and find the corresponding deployed website. Stop first.

Find "Request Filtering" in IIS and double-click to open it.

Click "Edit Function Settings" on the right to open the "Edit Request Filtering Settings" dialog box.

The maximum allowed capacity length is "30000000" by default, 30M. Modify it to the required size.

Finally, start IIS. Re-upload, successful!

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