How do I fix issues with email attachments not opening?

1. Check the file size and format – if the file is larger than 20MB, it may not attach properly.
2. Verify that your email client and operating system support the attachment type.
3. Zip the file into a compressed folder. This may significantly reduce the size and also make the file easier to attach.
4. Check for any active anti-virus or anti-malware software which may be blocking the file.
5. Try attaching the file from a different source.