the remote server returned an error .(400 bad request)

Copper Contributor

Hello all,
I am facing a bad request issue in sharepoint online while uploading data from. Net application. It's been working fine since a year till past few weeks.I have tried every possible solution but all in vain. Kindly help me out ASAP..

Error code:the remote server returned an error .(400 bad request)

1 Reply

The 400 (Bad Request) status code indicates that the server cannot or will not process the request because the received syntax is invalid, nonsensical, or exceeds some limitation on what the server is willing to process. It means that the request itself has somehow incorrect or corrupted and the server couldn't understand it. The server is refusing to service the request because the entity of the request is in a format not supported by the requested resource for the requested method . Therefore, it prevents the website from being properly displayed. The main thing to understand is that the 400 Bad Request error is a client-side error.


The cause of a 400 error can be a wrongly written URL or a URL that contains unrecognizable characters. Another cause of the error might be an invalid or expired cookie. Also, if you try to upload a file that's too large. If the server is programmed with a file size limit, then you might encounter a 400 error.