Users receive the error message “404 Not Found” when trying to open or download attachment files from documents in TEM Web.

This issue typically occurs when multiple TEM sessions are active in the same browser, resulting in cookie conflicts. It may also occur when browser tabs are closed without properly logging out, causing active sessions to remain in the background.

Please log in again and ensure that only one session remains open at a time within the same browser, or log in using a different browser—for example, Google Chrome and Microsoft Edge—and check if this resolves the issue. Additionally, we recommend always using the “Log out” option instead of simply closing the browser tab, as this ensures the session closes properly and helps prevent potential conflicts.