https://community.checkpoint.com/t5/Email-and-Collaboration/Harmony-Email-Collaboration-Excel-attachments-converted-to-txt/m-p/267571#M700 <P><BR />Hey Community,</P><P>We are experiencing a situation where Excel files (.xls) sent through Harmony Email &amp; Collaboration arrive at the destination as .xls.txt, with the content removed.</P><P>Some context:</P><UL><LI><P>The attachment is generated normally from Excel (Office 2010/2016).</P></LI><LI><P>The email is sent internally and externally.</P></LI><LI><P>Other file types are delivered without modification.</P></LI><LI><P>We are using <STRONG>Harmony Email &amp; Collaboration with Threat Extraction / CDR enabled</STRONG>.</P></LI></UL><P>Our questions:</P><OL><LI><P>Is this <STRONG>expected behavior</STRONG> of Threat Extraction / Content Disarm &amp; Reconstruction?</P></LI><LI><P>Is there a <STRONG>way to preserve Excel content</STRONG> for internal users without disabling security policies?</P></LI><LI><P>Are there <STRONG>best practices or recommended configurations</STRONG> to avoid this issue while maintaining protection?</P></LI></OL><P>Any guidance, official documentation, or practical workaround would be appreciated.</P> Fri, 16 Jan 2026 10:08:38 GMT AfterMath 2026-01-16T10:08:38Z https://community.checkpoint.com/t5/Email-and-Collaboration/Harmony-Email-Collaboration-Excel-attachments-converted-to-txt/m-p/267571#M700 <P><BR />Hey Community,</P><P>We are experiencing a situation where Excel files (.xls) sent through Harmony Email &amp; Collaboration arrive at the destination as .xls.txt, with the content removed.</P><P>Some context:</P><UL><LI><P>The attachment is generated normally from Excel (Office 2010/2016).</P></LI><LI><P>The email is sent internally and externally.</P></LI><LI><P>Other file types are delivered without modification.</P></LI><LI><P>We are using <STRONG>Harmony Email &amp; Collaboration with Threat Extraction / CDR enabled</STRONG>.</P></LI></UL><P>Our questions:</P><OL><LI><P>Is this <STRONG>expected behavior</STRONG> of Threat Extraction / Content Disarm &amp; Reconstruction?</P></LI><LI><P>Is there a <STRONG>way to preserve Excel content</STRONG> for internal users without disabling security policies?</P></LI><LI><P>Are there <STRONG>best practices or recommended configurations</STRONG> to avoid this issue while maintaining protection?</P></LI></OL><P>Any guidance, official documentation, or practical workaround would be appreciated.</P> Fri, 16 Jan 2026 10:08:38 GMT https://community.checkpoint.com/t5/Email-and-Collaboration/Harmony-Email-Collaboration-Excel-attachments-converted-to-txt/m-p/267571#M700 AfterMath 2026-01-16T10:08:38Z https://community.checkpoint.com/t5/Email-and-Collaboration/Harmony-Email-Collaboration-Excel-attachments-converted-to-txt/m-p/267587#M701 <P>Are you using the clean or convert option?</P> <P>Also to clarify who is receiving the modified attachment internal or external recipients?</P> <P>Relevant documentation:</P> <P><A href="https://sc1.checkpoint.com/documents/Harmony_Email_and_Collaboration/Topics-Harmony-Email-Collaboration-Admin-Guide/Email-Protection/Configure-Email-Policy/attachment-cleaning-workflow.htm?tocpath=Email%20Protection%7CConfiguring%20Email%20Policy%7CThreat%20Detection%20Policy%7CThreat%20Detection%20Policy%20Workflows%7CAttachment%20Cleaning%20(Threat%20Extraction)%7C_____0#Attachment_Cleaning_(Threat_Extraction)" target="_blank" rel="noopener">https://sc1.checkpoint.com/documents/Harmony_Email_and_Collaboration/Topics-Harmony-Email-Collaboration-Admin-Guide/Email-Protection/Configure-Email-Policy/attachment-cleaning-workflow.htm?tocpath=Email%20Protection%7CConfiguring%20Email%20Policy%7CThreat%20Detection%20Policy%7CThreat%20Detection%20Policy%20Workflows%7CAttachment%20Cleaning%20(Threat%20Extraction)%7C_____0#Attachment_Cleaning_(Threat_Extraction)</A></P> Fri, 16 Jan 2026 12:56:58 GMT https://community.checkpoint.com/t5/Email-and-Collaboration/Harmony-Email-Collaboration-Excel-attachments-converted-to-txt/m-p/267587#M701 Chris_Atkinson 2026-01-16T12:56:58Z