I can't print any attachments in my email. They show the lock icon with a yellow triangle.
I can print from other places, so it's not the printer or the connection.
Chosen solution
The lock icon with a yellow triangle is an informational warning. It nearly always mean that it's an HTTPS page, and nearly everything was retrieved over a secure connection, but Firefox loaded one or more images over an insecure HTTP connection. That "mixed content" situation shouldn't stop you from printing.
How do you usually print attachments on your mail site. Do you click an icon (printer) or click a menu item (e.g., Print) and that usually pops up a separate window with the print-optimized layout? If a window that usually pops up isn't popping up, of course one possible reason is a pop-up blocker. Firefox's built-in popup blocker should allow new windows after a click, but there are some add-ons that are stricter.
Note: If the attachment is a PDF, I recommend opening it in your separate PDF viewer program for printing. Firefox converts the PDF to HTML, and the printout is not as accurate as the original.
If you use any add-ons that block popups or other kinds of content, could you check their toolbar buttons and try to turn them off temporarily to see whether that helps with being able to print your email?
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What email provider and what are the attachments? Are you sure the A/V isn't blocking it?
Chosen Solution
The lock icon with a yellow triangle is an informational warning. It nearly always mean that it's an HTTPS page, and nearly everything was retrieved over a secure connection, but Firefox loaded one or more images over an insecure HTTP connection. That "mixed content" situation shouldn't stop you from printing.
How do you usually print attachments on your mail site. Do you click an icon (printer) or click a menu item (e.g., Print) and that usually pops up a separate window with the print-optimized layout? If a window that usually pops up isn't popping up, of course one possible reason is a pop-up blocker. Firefox's built-in popup blocker should allow new windows after a click, but there are some add-ons that are stricter.
Note: If the attachment is a PDF, I recommend opening it in your separate PDF viewer program for printing. Firefox converts the PDF to HTML, and the printout is not as accurate as the original.
If you use any add-ons that block popups or other kinds of content, could you check their toolbar buttons and try to turn them off temporarily to see whether that helps with being able to print your email?
When I opened the attachment with Microsoft Edge I was able to print it. Thanks.