All of a sudden we are not able to upload any attachments (be it req, plan, lab or defects) in one project. While uploading the attachment, the progress bar stays at 0% for a long time (sometimes more than 10 minutes) and when it finishes the size of the attachment is 0 KB.

Again this happens with only one project. In other projects we are able to upload attachments without any issue.

Even the project admin is not able to upload attachments. Also the problem is not with size of the attachment.

The QC version is 9.0 and project data is stored in DB.

Has anyone come across this problem?