We have a web application that allows a user to upload an Excel file. We then process the file in memory with the Aspose.Cells component for .Net and then use the Save function (to a response) to download it again to the user. This has been working great for almost 5 years. However, in mid-December, many of our customers have started receiving the Failed Network Error instead of the file downloading successfully. Yesterday, I rolled back the version of Aspose.Cells to the November release (20.11.0) from the current release of 21.2.0. That did not fix the issue. This does not happen for all users (including me) but it does happen for most users. We have seen the issue in Chrome, Firefox and Edge so it does not seem to be browser specific. I have tried disabling A/V on affected computers as that seems to be the only mention of the issue on the web. Note also that we are able to to download Excel files that are on the web server (not streamed through the Aspose.Cells component) without issue.
Question - Is anyone else experiencing this issue and if so, have you been able to fix it?