Troublesome .ost Files in Outlook on Windows 11


Byte

Member
Local time
9:51 PM
Posts
2
OS
Windows 11 Pro 64-bit
Hello All,
On my windows 10 computer, I have always used a single account with all the Domain Emails downloading into a single "Inbox" and a single "Sent" file and single supporting folders . It even downloads a iPhone and Android emails straight to the same Inbox. These are being stored in Outlook Files Folder in Documents as .pst files. But on Windows 11 it opens a full account for each email downloading in each of their Inboxes and supporting folders separately. And this way it is a nightmare. When I open my travel website I will have about 17 email accounts!!! It stores each email as .ost file in AppData/Local/Microsoft/Outlook and does not allow you to choose the same data files.
I have installed complete Office 365 from the Family Version with 6 subscriptions on another computer of mine. On all other computers I have no problems installing as a single application working all emails in that itself.
In fact it is getting to be quite a pain in the you know where and have half a mind to gut it completely and install Windows 10.
Is there any way to have it the usual convenient way on Windows 11.
 
Windows Build/Version
Edition Windows 11 Pro Version 21H2 Installed on ‎04/‎06/‎2022 OS build 22000.832 Experience Windows Feature Experience Pack 1000.22000.832.0

My Computer

System One

  • OS
    Windows 11 Pro 64-bit
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo
    CPU
    Intel Core i5 @ 2.50GHz Comet Lake 14nm Technology
    Motherboard
    LENOVO LNVNB161216 (U3E1)
    Memory
    Size 8192 MBytes
    Graphics Card(s)
    Generic PnP Monitor (1920x1080@120Hz) 4095MB NVIDIA GeForce GTX 1650 (Lenovo)
    Sound Card
    NVIDIA High Definition Audio Realtek High Definition Audio(SST)
    Screen Resolution
    1280x720 pixels
    Hard Drives
    476GB Western Digital WDC PC SN730 SDBPNTY-512G-1101 (SSD)
    Case
    Lenovo Legion
    Mouse
    Lenovo
    Internet Speed
    320 MBits/sec upload and download
    Browser
    Chrome
I've used Microsoft Outlook for many years. I also subscribe to Microsoft 365. We have upgraded to W11 on all our family member computers. Outlook upgraded on all computers problem free.

Your situation certainly sounds strange. I would consider uninstalling Outlook from the problem W11 computer and reinstalling it again from the Windows 365 page.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell XPS 15 9510 OLED
    CPU
    11th Gen i9 -11900H
    Memory
    32 GB 3200 MHz DDR4
    Graphics Card(s)
    NVIDIA® GeForce® RTX 3050Ti
    Monitor(s) Displays
    15.6" OLED Infinity Edge Touch
    Screen Resolution
    16:10 Aspect Ratio (3456 x 2160)
    Hard Drives
    1 Terabyte M.2 PCIe NVMe SSD
    2 Thunderbolt™ 4 (USB Type-C™)
    1 USB 3.2 Gen 2 (USB Type-C™)
    SD Card Reader (SD, SDHC, SDXC)
    Internet Speed
    900 Mbps Netgear Orbi + 2 Satellites
    Browser
    Microsoft Edge (Chromium) + Bing
    Antivirus
    Microsoft Windows Security (Defender)
    Other Info
    Microsoft 365 subscription
    Microsoft OneDrive 1TB Cloud
    Microsoft Outlook
    Microsoft OneNote
    Microsoft PowerToys
    Microsoft Visual Studio
    Microsoft Visual Studio Code
    Macrium Reflect
    Dell Support Assist
    Dell Command | Update
    LastPass Password Manager
    Amazon Kindle
    Interactive Brokers Trader Workstation
    Lightroom/Photoshop subscription
  • Operating System
    Windows 11 Pro
    Computer type
    Tablet
    Manufacturer/Model
    Microsoft Surface Pro 7
    CPU
    i5
    Memory
    8 GB
    Hard Drives
    256GB SSD
    Internet Speed
    900 Mbps Netgear Orbi + 2 Satellites
    Browser
    Microsoft Edge (Chromium) + Bing
    Antivirus
    Microsoft Windows Security (Defender)
    Other Info
    Microsoft 365 subscription (Office)
    Microsoft OneDrive 1TB Cloud
    Microsoft Outlook
    Microsoft OneNote
    Microsoft Visual Studio
    Amazon Kindle
    Interactive Brokers Trader Workstation
    Lightroom/Photoshop subscription
Hi Gary,
I have twice repaired the installation "online" meaning it drops in completely new application files. Each time its been the same. I'll try it again tomorrow. Please tell me where does it save the .pst files and does it also generate .ost files and saves these in the AppData/local/Microsoft/Outlook folder.
 

My Computer

System One

  • OS
    Windows 11 Pro 64-bit
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo
    CPU
    Intel Core i5 @ 2.50GHz Comet Lake 14nm Technology
    Motherboard
    LENOVO LNVNB161216 (U3E1)
    Memory
    Size 8192 MBytes
    Graphics Card(s)
    Generic PnP Monitor (1920x1080@120Hz) 4095MB NVIDIA GeForce GTX 1650 (Lenovo)
    Sound Card
    NVIDIA High Definition Audio Realtek High Definition Audio(SST)
    Screen Resolution
    1280x720 pixels
    Hard Drives
    476GB Western Digital WDC PC SN730 SDBPNTY-512G-1101 (SSD)
    Case
    Lenovo Legion
    Mouse
    Lenovo
    Internet Speed
    320 MBits/sec upload and download
    Browser
    Chrome
Please tell me where does it save the .pst files and does it also generate .ost files and saves these in the AppData/local/Microsoft/Outlook folder.
Depending on whether you use a POP or IMAP email account will depend on where your email gets stored. Email accounts using IMAP will be stored in an .OST file and its location is under C:\Users\UserName\AppData\Local\Microsoft\Outlook.

For email accounts using POP, those emails are stored in a .PST file located under "Documents" subfolder "Outlook Files"

 

My Computers

System One System Two

  • OS
    Windows 11 Pro 23H2 (Build 22631.3296)
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom built
    CPU
    Intel i9-9900K
    Motherboard
    Gigabyte Aorus Z390 Xtreme
    Memory
    32G (4x8) DDR4 Corsair RGB Dominator Platinum (3600Mhz)
    Graphics Card(s)
    Radeon VII
    Sound Card
    Onboard (ESS Sabre HiFi using Realtek drivers)
    Monitor(s) Displays
    NEC PA242w (24 inch)
    Screen Resolution
    1920 x 1200
    Hard Drives
    5 Samsung SSD drives: 2X 970 NVME (512 & 1TB), 3X EVO SATA (2X 2TB, 1X 1TB)
    PSU
    EVGA Super Nova I000 G2 (1000 watt)
    Case
    Cooler Master H500M
    Cooling
    Corsair H115i RGB Platinum
    Keyboard
    Logitech Craft
    Mouse
    Logitech MX Master 3
    Internet Speed
    500mb Download. 11mb Upload
    Browser
    Microsoft Edge Chromium
    Antivirus
    Windows Security
    Other Info
    System used for gaming, photography, music, school.
  • Operating System
    Win 10 Pro 22H2 (build 19045.2130)
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom Built
    CPU
    Intel i7-7700K
    Motherboard
    Gigabyte GA-Z270X-GAMING 8
    Memory
    32G (4x8) DDR4 Corsair Dominator Platinum (3333Mhz)
    Graphics card(s)
    AMD Radeon R9 Fury
    Sound Card
    Onboard (Creative Sound Blaster certified ZxRi)
    Monitor(s) Displays
    Dell U2415 (24 inch)
    Screen Resolution
    1920 x 1200
    Hard Drives
    3 Samsung SSD drives: 1x 512gig 950 NVMe drive (OS drive), 1 x 512gig 850 Pro, 1x 256gig 840 Pro.
    PSU
    EVGA Super Nova 1000 P2 (1000 watt)
    Case
    Phantek Enthoo Luxe
    Cooling
    Corsair H100i
    Mouse
    Logitech MX Master
    Keyboard
    Logitech MK 710
    Internet Speed
    100MB
    Browser
    Edge Chromium
    Antivirus
    Windows Security
    Other Info
    This is my backup system.

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