1. Navigate to Message via the left-hand navigation bar
2. Select a conversation from the conversation list
3. Locate the file you’d like to rename either via the message thread or conversation details panel
4. Hover your mouse over the file and click the More kabob icon that appears in the bottom right-hand corner of the file
5. Select Rename file from the dropdown menu to open the Rename file modal window
6. Click into the Filename field and make any changes to the filename
7. Click Save to complete renaming the file