Encoded Data Checksum Mismatch - Attachment may be corrupted

What happened

The attachment you tried to use is unusable by HCL Notes®.

What you can do

Ask the sender of the message, or the creator of the document in a non-mail application, to create the attachment again.

If the attachment is in a mail message, delete the entire message (with attachment) and ask the sender to send a new message with a new attachment.

If the attachment is in a non-mail document, have the author delete the original attachment and then create a new document with a new attachment.