Select the previous message in the chat list

`⌘ Cmd` + `↑`

All hotkeys for Skype

Skype for Windows 10 Open self profile	`Ctrl` + `I`
Skype for Windows 10 Open Settings	`Ctrl` + `,`
Skype for Windows 10 Open Help in default browser	`Ctrl` + `H`
Skype for Windows 10 Launch main dialpad	`Ctrl` + `D`
Skype for Windows 10 Start new conversation	`Ctrl` + `N`
New Skype shortcuts (Windows) New group	`Ctrl` + `G`
Skype for Windows 10 Search contacts and messages	`Ctrl` + `F`
Skype for Windows 10 Navigate to recents	`Alt` + `1`
Skype for Windows 10 Navigate to contacts	`Alt` + `2`
Skype for Windows 10 Navigate to bots	`Alt` + `3`
Skype for Windows 10 Send feedback	`Ctrl` + `O`
New Skype shortcuts (Windows) Refresh the app	`Ctrl` + `R`
New Skype shortcuts (Windows) Open themes	`Ctrl` + `T`
Skype for Windows 10 After sending message, edit the last message sent	`↑`
Skype for Windows 10 Show conversation profile	`Ctrl` + `P`
Skype for Windows 10 Add people to conversation	`Ctrl` + `↑ Shift` + `A`
Skype for Windows 10 Send a file	`Ctrl` + `↑ Shift` + `F`
Skype for Windows 10 Mark as unread	`Ctrl` + `↑ Shift` + `U`
Skype for Windows 10 Start a video call	`Ctrl` + `↑ Shift` + `K`
Skype for Windows 10 Start an audio call	`Ctrl` + `↑ Shift` + `P`
New Skype shortcuts (Windows) Open gallery	`Ctrl` + `↑ Shift` + `G`
Skype for Windows 10 Hang up call	`Ctrl` + `E`
Skype for Windows 10 Mute	`Ctrl` + `M`
New Skype shortcuts (Windows) Select the next message in the chat list	`↓`
New Skype shortcuts (Mac) Open the main Skype window	`⌘ Cmd` + `1`
New Skype shortcuts (Mac) Open Notification panel	`⌘ Cmd` + `↑ Shift` + `O`
New Skype shortcuts (Mac) Open app settings	`⌘ Cmd` + `↑ Shift` + `I`
New Skype shortcuts (Mac) Launch main dial pad	`⌘ Cmd` + `2`
New Skype shortcuts (Mac) Start new conversation	`⌘ Cmd` + `N`
New Skype shortcuts (Mac) New group	`⌘ Cmd` + `G`
New Skype shortcuts (Mac) Search contacts and messages	`⌘ Cmd` + `F`
New Skype shortcuts (Mac) Open contacts	`⌘ Cmd` + `↑ Shift` + `C`
New Skype shortcuts (Mac) Open contact screen to bots	`⌘ Cmd` + `↑ Shift` + `B`
New Skype shortcuts (Mac) Send feedback	`⌘ Cmd` + `⌥ Option` + `O`
New Skype shortcuts (Mac) Refresh the app	`⌘ Cmd` + `R`
New Skype shortcuts (Mac) Open themes	`⌘ Cmd` + `T`
New Skype shortcuts (Mac) Edit the last message sent	`⌘ Cmd` + `↑ Shift` + `E`
New Skype shortcuts (Mac) Show conversation profile	`⌘ Cmd` + `I`
New Skype shortcuts (Mac) Add people to conversation	`⌘ Cmd` + `↑ Shift` + `A`
New Skype shortcuts (Mac) Send a file	`⌘ Cmd` + `↑ Shift` + `F`
New Skype shortcuts (Mac) Mark as unread	`⌘ Cmd` + `↑ Shift` + `U`
New Skype shortcuts (Mac) Start a video call	`⌘ Cmd` + `↑ Shift` + `K`
New Skype shortcuts (Mac) Start an audio call	`⌘ Cmd` + `↑ Shift` + `R`
New Skype shortcuts (Mac) Open gallery	`⌘ Cmd` + `↑ Shift` + `G`
New Skype shortcuts (Mac) Hang up	`⌘ Cmd` + `↑ Shift` + `H`
New Skype shortcuts (Mac) Mute	`⌘ Cmd` + `↑ Shift` + `M`
New Skype shortcuts (Mac) Select the next message in the chat list	`⌘ Cmd` + `↓`
New Skype shortcuts (Mac) Select the previous message in the chat list	`⌘ Cmd` + `↑`
Skype for Windows 10 Hide conversation	`Ctrl` + `F4`
Skype for Windows 10 Toggle hold/resume state of active call	`Ctrl` + `↑ Shift` + `H`