Thunderbird email program did a system update on Tuesday (19/10/21) since then it won’t allow me to open email attachments. It recognises the file type (pdf/word etc) but when you double click to open or right click and select open it doesn’t, it just asks you to save the file. So I am having to save every attachment just to view, which in my job is a big problem as I need to flick between emails / attachments regularly. Anyone has any ideas that would be great, as up until Tuesday I have never had a problem and been using this email for years Thanks