Outlook Classic or Outlook New?


I am planning on setting up a home domain soon. It's been many years since I worked with Server, which is ironic considering that I was in Tech Support for Windows Server many years ago.
Get an Azure dev domain tenant and join us in the clouds. All the cool kids are doin it.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 24H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Intel NUC12WSHi7
    CPU
    12th Gen Intel Core i7-1260P, 2100 MHz
    Motherboard
    NUC12WSBi7
    Memory
    64 GB
    Graphics Card(s)
    Intel Iris Xe
    Sound Card
    built-in Realtek HD audio
    Monitor(s) Displays
    Dell U3219Q
    Screen Resolution
    3840x2160 @ 60Hz
    Hard Drives
    Samsung SSD 990 PRO 1TB
    Keyboard
    CODE 104-Key Mechanical with Cherry MX Clears
    Antivirus
    Microsoft Defender
  • Operating System
    Linux Mint 21.2 (Cinnamon)
    Computer type
    PC/Desktop
    Manufacturer/Model
    Intel NUC8i5BEH
    CPU
    Intel Core i5-8259U CPU @ 2.30GHz
    Memory
    32 GB
    Graphics card(s)
    Iris Plus 655
    Keyboard
    CODE 104-Key Mechanical with Cherry MX Clears

My Computers

System One System Two

  • OS
    Windows 11 build 10.0.22635.4515 Beta / WSL 2 running Ubuntu
    Computer type
    Laptop
    Manufacturer/Model
    Dell Inspiron 14 5430
    CPU
    Intel i7-1355U
    Motherboard
    Dell 0GMW80
    Memory
    16GB
    Graphics Card(s)
    Intel Iris XE
    Sound Card
    Realtek
    Monitor(s) Displays
    Dell 14", LG 32" Curved Wide screen monitor and LG Ultrawide 26"
    Screen Resolution
    1920 x 1200 @ 60Hz, 1920 x 1080 @ 100Hz and 2560 x 1080 @ 60Hz
    Hard Drives
    Samsung 990 Pro 1TB NVME Gen 4 M.2 SSD
    PSU
    Dell
    Case
    Dell
    Cooling
    Dell
    Keyboard
    Dell KM3322W
    Mouse
    Dell Trackpad or Dell KM3322W
    Internet Speed
    900mb down / 400mb up FTTP
    Browser
    Edge 132.0.2957.11
    Antivirus
    Windows Defender
    Other Info
    Windows 365
    1TB OneDrive
    Outlook Classic
    Visual Studio Code running in WSL
    Python 3.13
    Macrium Reflect X
    Samsung Magician
    Garmin Express
    Dell TB16 Thunderbolt dock
    WSL
    WEI Score: 8.3
  • Operating System
    Windows 11
    Computer type
    Tablet
    Manufacturer/Model
    Microsoft Surface Pro 7
    CPU
    Core i5 - 1035G4
    Motherboard
    Microsoft
    Memory
    8GB
    Graphics card(s)
    Intel Iris Plus
    Monitor(s) Displays
    Surface touch
    Screen Resolution
    2736 x 1824
    Hard Drives
    128GB
    PSU
    Microsoft
    Case
    Microsoft Keyboard
    Cooling
    None
    Mouse
    Microsoft Arc Intellimouse
    Keyboard
    Microsoft Surface Keyboard
    Internet Speed
    900mb / 400mb FTTP
    Browser
    Edge
    Antivirus
    Windows Defender
Have a subscription to MS Office 365, been using it since 2017, Outlook Classic is used daily here. Guess in the future if i have to be forced to switch to Outlook New, then at the time will then i suppose

Been using Outlook for as long as i can remember--started when bought first MS Office around 1998, then bought Office 2013 years later--used that til i upgraded to MS Office 365 with laptop purchase (5 years purchased at that time) renewed immediately when it expired
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 26100.2314
    Computer type
    PC/Desktop
    Manufacturer/Model
    PreBuilt
    CPU
    AMD Ryzen 7700X
    Motherboard
    MSI B650 VC WIfi
    Memory
    32GB DDR 5 RGB 5600Mhz
    Graphics Card(s)
    Radeon 7800XT
    Sound Card
    Onboard Audio
    Monitor(s) Displays
    Asus VG245H
    Screen Resolution
    1920x1080
    Hard Drives
    Kingston 1TB Boot NVMe
    Samsung 860 Evo 1TB-Game SSD


    External
    Western Digital Elements 500GB
    Western Digital My Passport 2TB Blue
    Western Digital My Passport 2TB Red
    Toshiba 2TB in External Enclosure
    Seagate 8TB in External Enclosure
    Seagate 1TB Portable USB 3 External Drive
    Western Digital My Book 8TB (Primary Backup drive)
    Western Digital Black 4TB In External Enclosure
    PSU
    750 Watt High Power
    Case
    Lian Li Lan Cool 216 ARGB Airflow
    Cooling
    2 160MM Front, 1 140MM Rear Exhaust
    Keyboard
    Logitech G513
    Mouse
    Logitech G502 X
    Internet Speed
    Gigabit 1000Mb/20 Upload
    Browser
    MS Edge Chromium
    Antivirus
    Windows Defender, Malwarebytes Premium
    Other Info
    UEFI, Secure Boot, TPM 2.0, Acronis True Image 2025
  • Operating System
    Windows 10 Home
    Computer type
    Laptop
    Manufacturer/Model
    HP Omen 15_ce019dx
    CPU
    Intel I7 7700H
    Motherboard
    OEM HP Omen Laptop Motherboard
    Memory
    8GB DDR 4
    Graphics card(s)
    Intel HD 630 and Nvidia Geforce 1050TI
    Sound Card
    Onboard
    Monitor(s) Displays
    15.6 Laptop Display
    Screen Resolution
    1920x1080
    Hard Drives
    128GB NvMe Boot Drive
    1TB Hitachi Sata Hard drive
    PSU
    Laptop PSU
    Case
    Laptop Case
    Cooling
    OEM Cooling
    Mouse
    Logitech G502 Hero
    Keyboard
    OEM Laptop Keyboard
    Internet Speed
    Gigabit 1000 Download/20 Upload
    Browser
    MS Edge
    Antivirus
    Windows Defender & Malwarebytes Premium
Today, Calendar opened to the new Outlook. I tried to open the classic Calendar but it only gave me an option to export or go to the new Outlook. Now I am stuck with the new Calendar.

Any suggestions on how to get back to the classic Calendar?

Kind regards,

tecknot
 

My Computer

System One

  • OS
    Dual boot Windows 10 Pro 22H2 (b 19045.5487) & Windows 11 Pro 23H2 (b 22631.4890)
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo ThinkPad Workstation P72
    CPU
    Intel i7 8750H @ 2.2 GHz
    Motherboard
    Lenovo 01YU291
    Memory
    16 GB (all Samsung) DDR4-3200 SODIMM (non-ECC) PCIe 3
    Graphics Card(s)
    Intel UHD Graphics 630 & NVIDIA Quadro P600
    Sound Card
    Realtek ALC3286
    Monitor(s) Displays
    17.3"
    Screen Resolution
    3840x2160
    Hard Drives
    1TB SSD Samsung 860 EVO SATA 3
    1TB SSD Samsung 970 EVO M.2 NVMe PCIe 3 x 4
    1TB SSD Samsung 980 M.2 NVMe PCIe 3 x 4
    PSU
    230W
    Cooling
    fan
    Keyboard
    UltraNav
    Mouse
    Kensington wireless Orbit
    Internet Speed
    640Mbps
    Browser
    Firefox
    Antivirus
    Defender
    Other Info
    CM246 Chipset
Outlook (new), Settings, General, About, Return.
Thanks BruceR,

Unfortunately, I get a pop-up windows stating Mail and Calendar are no longer supported and I can't go back (see below). When I click on Open Outlook, it just takes me back to the new Outlook.1740266116603.webp

Kind regards,

tecknot
 

My Computer

System One

  • OS
    Dual boot Windows 10 Pro 22H2 (b 19045.5487) & Windows 11 Pro 23H2 (b 22631.4890)
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo ThinkPad Workstation P72
    CPU
    Intel i7 8750H @ 2.2 GHz
    Motherboard
    Lenovo 01YU291
    Memory
    16 GB (all Samsung) DDR4-3200 SODIMM (non-ECC) PCIe 3
    Graphics Card(s)
    Intel UHD Graphics 630 & NVIDIA Quadro P600
    Sound Card
    Realtek ALC3286
    Monitor(s) Displays
    17.3"
    Screen Resolution
    3840x2160
    Hard Drives
    1TB SSD Samsung 860 EVO SATA 3
    1TB SSD Samsung 970 EVO M.2 NVMe PCIe 3 x 4
    1TB SSD Samsung 980 M.2 NVMe PCIe 3 x 4
    PSU
    230W
    Cooling
    fan
    Keyboard
    UltraNav
    Mouse
    Kensington wireless Orbit
    Internet Speed
    640Mbps
    Browser
    Firefox
    Antivirus
    Defender
    Other Info
    CM246 Chipset
Windows Mail and Microsoft Outlook are two separate applications. Windows Mail (also known as Mail & Calendar) is a built-in email and calendar app that comes with Windows 10 and 11. It's designed to be lightweight and easy to use for basic email and calendar needs. Windows Mail is being deprecated.

Outlook, on the other hand, is a more feature-rich application that is part of the Microsoft 365 suite. It offers advanced email, calendar, and task management features and integrates with other Microsoft services and products.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell XPS 16 9640
    CPU
    Intel Core Ultra 9 185H
    Memory
    32GB LPDDR5x 7467 MT/s
    Graphics Card(s)
    NVIDIA GeForce RTX 4070 8GB GDDR6
    Monitor(s) Displays
    16.3 inch 4K+ OLED Infinity Edge Touch
    Screen Resolution
    3840 x 2400
    Hard Drives
    1 Terabyte M.2 PCIe NVMe SSD
    Cooling
    Vapor Chamber Cooling
    Mouse
    None
    Internet Speed
    960 Mbps Netgear Mesh + 2 Satellites
    Browser
    Microsoft Edge (Chromium) + Bing
    Antivirus
    Microsoft Windows Security (Defender)
    Other Info
    Microsoft 365 subscription
    Microsoft OneDrive 1TB Cloud
    Microsoft Visual Studio
    Microsoft Visual Studio Code
    Microsoft PowerToys
    Macrium Reflect X subscription
    Dell Support Assist
    Dell Command | Update
    1Password Password Manager
    Amazon Kindle for PC
    Interactive Brokers Trader Workstation
    Lightroom/Photoshop subscription
    BitLocker
    CoPilot
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Microsoft Surface Pro 7
    CPU
    i5 1035G4
    Memory
    8 GB
    Hard Drives
    256GB SSD
    Internet Speed
    960 Mbps Netgear Mesh + 2 Satellites
    Browser
    Microsoft Edge (Chromium) + Bing
    Antivirus
    Microsoft Windows Security (Defender)
    Other Info
    Microsoft 365 subscription (Office)
    Microsoft OneDrive 1TB Cloud
    Amazon Kindle for PC
    Interactive Brokers Trader Workstation
    Lightroom/Photoshop subscription
    BitLocker
    CoPilot
no back in January, microsoft started forcing Mail and Calendar users to migrate to the New Outlook app. no going back unless someone develops an app to emulate the original mail and calendar. you can't sideload the old one as it will just prompt to migrate again
 

My Computer

System One

  • OS
    Windows 11 Pro
no back in January, microsoft started forcing Mail and Calendar users to migrate to the New Outlook app. no going back unless someone develops an app to emulate the original mail and calendar. you can't sideload the old one as it will just prompt to migrate again
I posted that because I thought that the OP had confused Windows Mail with Microsoft Outlook. Apparently not.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell XPS 16 9640
    CPU
    Intel Core Ultra 9 185H
    Memory
    32GB LPDDR5x 7467 MT/s
    Graphics Card(s)
    NVIDIA GeForce RTX 4070 8GB GDDR6
    Monitor(s) Displays
    16.3 inch 4K+ OLED Infinity Edge Touch
    Screen Resolution
    3840 x 2400
    Hard Drives
    1 Terabyte M.2 PCIe NVMe SSD
    Cooling
    Vapor Chamber Cooling
    Mouse
    None
    Internet Speed
    960 Mbps Netgear Mesh + 2 Satellites
    Browser
    Microsoft Edge (Chromium) + Bing
    Antivirus
    Microsoft Windows Security (Defender)
    Other Info
    Microsoft 365 subscription
    Microsoft OneDrive 1TB Cloud
    Microsoft Visual Studio
    Microsoft Visual Studio Code
    Microsoft PowerToys
    Macrium Reflect X subscription
    Dell Support Assist
    Dell Command | Update
    1Password Password Manager
    Amazon Kindle for PC
    Interactive Brokers Trader Workstation
    Lightroom/Photoshop subscription
    BitLocker
    CoPilot
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Microsoft Surface Pro 7
    CPU
    i5 1035G4
    Memory
    8 GB
    Hard Drives
    256GB SSD
    Internet Speed
    960 Mbps Netgear Mesh + 2 Satellites
    Browser
    Microsoft Edge (Chromium) + Bing
    Antivirus
    Microsoft Windows Security (Defender)
    Other Info
    Microsoft 365 subscription (Office)
    Microsoft OneDrive 1TB Cloud
    Amazon Kindle for PC
    Interactive Brokers Trader Workstation
    Lightroom/Photoshop subscription
    BitLocker
    CoPilot
Thanks BruceR,

Unfortunately, I get a pop-up windows stating Mail and Calendar are no longer supported and I can't go back (see below).
I thought you may have just wanted to get back there temporarily to export stuff.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    Laptop
I thought you may have just wanted to get back there temporarily to export stuff.
I prefer to look of the former Calendar.

Kind regards,

tecknot
 

My Computer

System One

  • OS
    Dual boot Windows 10 Pro 22H2 (b 19045.5487) & Windows 11 Pro 23H2 (b 22631.4890)
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo ThinkPad Workstation P72
    CPU
    Intel i7 8750H @ 2.2 GHz
    Motherboard
    Lenovo 01YU291
    Memory
    16 GB (all Samsung) DDR4-3200 SODIMM (non-ECC) PCIe 3
    Graphics Card(s)
    Intel UHD Graphics 630 & NVIDIA Quadro P600
    Sound Card
    Realtek ALC3286
    Monitor(s) Displays
    17.3"
    Screen Resolution
    3840x2160
    Hard Drives
    1TB SSD Samsung 860 EVO SATA 3
    1TB SSD Samsung 970 EVO M.2 NVMe PCIe 3 x 4
    1TB SSD Samsung 980 M.2 NVMe PCIe 3 x 4
    PSU
    230W
    Cooling
    fan
    Keyboard
    UltraNav
    Mouse
    Kensington wireless Orbit
    Internet Speed
    640Mbps
    Browser
    Firefox
    Antivirus
    Defender
    Other Info
    CM246 Chipset
I have at least 15 years of archived e-mail in a PST file so it's absolutely critical to me. For the moment I pulled all of my PST contents into my live e-mail but the thought of only having it in the cloud makes me twitch.
I have at least 25 years of archived email in various PST files, including some from old jobs. I will use classic outlook forever, or until I pass away first. I have several use cases where I have to use Outlook offline, and not supporting those use cases is a dealbreaker for me. Beyond that, what is the underlying business driver for Microsoft? Harvesting all our data? Charging us for cloud storage for a guaranteed and ever increasing amount of storage.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    home built
    CPU
    AMD 7900x
    Motherboard
    ASUS AMD x670E ROG Strix E-A
    Memory
    64 GB
    Graphics Card(s)
    Nvidia 3060 Ti (but wanting to upgrade)
    Sound Card
    built-in
    Monitor(s) Displays
    Dell 24"
    Cooling
    AIO for CPU, fans for case
    Keyboard
    Das Keyboard 4
    Mouse
    Corsair M65 (white)
    Browser
    Firefox
    Antivirus
    Bitdefender
    Other Info
    Also have Lenovo T14S laptop (me) and Lenovo Slim 71 (wife)
A week ago, I performed a clean install of Windows. When I was reinstalling Microsoft 365, every app except Outlook installed. Uninstalled Microsoft 365 and tried again with same results. BruceR's suggestion (which I'd found independently and bookmarked) has the link to the only way to download Outlook (classic). Downloading from the Microsoft Office page or Microsoft Store only results in installing the New Outlook.
Microsoft seems to really want users to switch.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro Version 24H2 OS build 26100.3194
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell XPS 8960
    CPU
    13th Gen Intel Core i7-13700 2.10 GHz
    Memory
    32 GB
    Graphics Card(s)
    Intel UHD Graphics 770 / NVIDIA GeForce RTX 3060
    Monitor(s) Displays
    Dell S2421H / Dell SE2222H
    Screen Resolution
    1920x1080
    Hard Drives
    C: Crucial CT1000P5PSSD8
    D: Seagate ST2000DM008
    E: Seagate ST4000DX005
    Keyboard
    Logitech K650
    Mouse
    Logitech M650L
    Internet Speed
    200 Mbps
    Browser
    Firefox/Edge
    Antivirus
    Windows Security
  • Operating System
    Windows 11 Pro 23H2 Build 22631.4541
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Inspiron 3880
    CPU
    10th Gen Intel(R) Core(TM) i5-10400 CPU @ 2.90GHz
    Memory
    24 GB
    Monitor(s) Displays
    Dell S2421H
    Screen Resolution
    1920x1080
    Hard Drives
    C:\ - Crucial 1 TB NVME SSD

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