I cannot open downloaded files. The "Open" & "Open Containing Folder" options are grayed out, as well as the "Open" option. I have removed Kaspersky to sure.
I cannot open downloaded files. The "Open" & "Open Containing Folder" options are grayed out. Cannot right-click on the files to open. File does not appear in the targeted folder. If "opened," the files provide an error message. Issue is primarily with MS Word.
Alla svar (1)
If "Open" and "Open Containing Folder" in the right-click context menu in the Download Manager window are grayed then that means that the file is no longer in the original download location.
It is possible that your anti-virus software is corrupting the downloaded files or otherwise interfering with downloading files by Firefox.
Try to disable the real-time (live) scanning of files in your anti-virus software temporarily to see if that makes downloading work.
See "Disable virus scanning in Firefox preferences - Windows"