How can I force a reinstall of Outlook 365 (Latest version - whatever it is called)


Sigurd

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My PC running the latest desktop PC version of Windows and Office 365, now seemed to have been merged by the name of Windows 365 (I think) has a problem with Outlook, which won't load.

I have found various references to similar problems with various solutions but most seem to be outdated - the steps described are not possible because references to various steps are often missing and I can't find the step nor the location anywhere else.

Simple solution would appear to be a re-installation and re-setup of Outlook, but even that is proving hard to find.

I'd welcome pointers.
 

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--Edit--
Use @glasskuter link below and ignore my suggestion. Only follow this if the below doesn't work, so I'll leave it here for others to read
--End Edit--

Pending on your current setup/install... Here's what I would do... (Not sure if it's recommended, but seems logical).

I know it's not ideal, but, I would download the Office Uninstall Tool (More info on Microsoft's site) and fully remove ALL of Office. Reboot the computer, then visit Office's website and click the "Already entered your key..." (however it's worded) link to log into your Microsoft Account and reinstall the latest version from scratch.

Note for the above... You WILL have to reconfigure all Office apps to get back to the settings you used to have, the removal tool will nuke any custom settings when you use it. (So, set your email in Outlook again, maybe change your default font in Word, or whatever you need to do).
 
Last edited:

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My PC running the latest desktop PC version of Windows and Office 365, now seemed to have been merged by the name of Windows 365 (I think) has a problem with Outlook, which won't load.

I have found various references to similar problems with various solutions but most seem to be outdated - the steps described are not possible because references to various steps are often missing and I can't find the step nor the location anywhere else.

Simple solution would appear to be a re-installation and re-setup of Outlook, but even that is proving hard to find.

I'd welcome pointers.

"If" you have a "paid" and activated subscription of Office 365, it would show in your Microsoft Account, under Services & subscriptions. There you can download the installer to reinstall on your PC.

Many people think they have the "paid" version of 365, but unless you actually paid for a subscription, what you might have is the free online service offered by Microsoft - Download Microsoft Office | Microsoft 365. That version would NOT be listed in your Microsoft Account, or "locally" installed on your PC. It is ONLY the online version - you cannot install apps locally on your PC.

All, that said, if you in fact have their free version, note Outlook is not part of that package, and you would most likely be using the "Windows 11 version of "Outlook".
 

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)
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    Radeon VII
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    Onboard (ESS Sabre HiFi using Realtek drivers)
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    NEC PA242w (24 inch)
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    1920 x 1200
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    5 Samsung SSD drives: 2X 970 NVME (512 & 1TB), 3X EVO SATA (2X 2TB, 1X 1TB)
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    EVGA Super Nova I000 G2 (1000 watt)
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    Cooler Master H500M
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    Corsair H115i RGB Platinum
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    Logitech Craft
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    Logitech MX Master 3
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    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)
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    Phantek Enthoo Luxe
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    Corsair H100i
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    Logitech MX Master
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    Logitech MK 710
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    100MB
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    Edge Chromium
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    This is my backup system.
has a problem with Outlook, which won't load

1 Please explain what happens when you tell MSOffice Outlook to load & how your other MSOffice applications are behaving.

2 I suggest you try Outlook Safe mode first then use the rest of the guidance in the second link.
Open Outlook in Safe mode - MSSupport
I cant start MSOffice Outlook - MSSupport

3 I suggest you try repairing your existing Office next.
Repair an Office application - MSSupport

4 And check-repair your pst or ost file.
Repair Outlook Data Files (.pst and .ost) - MSSupport

5 Then, if necessary:-
Uninstall Office from a PC - MSSupport
Manually uninstall Office apps - OfficeSupport
Then check in Settings, Apps lists that you have uninstalled every version of Office before trying to re-install
Download and install or reinstall Office - MSSupport


Best of luck,
Denis
 
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My Computer

System One

  • OS
    Windows 11 Home x64 Version 23H2 Build 22631.3447
Actually, the first thing the OP needs to figure out is if they actually have a paid subscription. As noted, many think they do, but actually don't. And especially, if you bought a PC with a 6-month subscription, included. Here many aren't aware they need to renew to keep the service going.

The easiest way to do this is to check their Microsoft account. All this takes less than a minute, if that.
 

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    Windows 11 Pro 23H2 (Build 22631.3296)
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    Custom built
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    Intel i9-9900K
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    Gigabyte Aorus Z390 Xtreme
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    32G (4x8) DDR4 Corsair RGB Dominator Platinum (3600Mhz)
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    Radeon VII
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    Onboard (ESS Sabre HiFi using Realtek drivers)
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    NEC PA242w (24 inch)
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    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)
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    Logitech Craft
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    Microsoft Edge Chromium
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    System used for gaming, photography, music, school.
  • Operating System
    Win 10 Pro 22H2 (build 19045.2130)
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    Intel i7-7700K
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    Gigabyte GA-Z270X-GAMING 8
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    32G (4x8) DDR4 Corsair Dominator Platinum (3333Mhz)
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Dru2 - I have a paid subscription on Direct Debit so the installation is valid.
Dennis - didn't explain what happens because nothing does! It appears to be loading but doesn't. Looking at Task Manager it hadn't. Yet when I closed PC there was a hold up because "Outlook was still running". I'll work my way through your usual useful suggestions in the morning. All other Office apps are OK.

I think Glasscutter has pointed to the problem I am having. There are that can be found by Googling that supposedly do the job bu t don;t. The one suggested I had already tried.
Uninstall Office and reinstall would probably work but a bit blunderbuss. I was hoping for a way of just dealing with Outlook. However none of the Office apps would require a lot of reconfiguration and I do have a recent backup of the data so wouldn't be a disaster or even a tumble of a bike.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Updated Chillblast
    CPU
    Intel i7 12700K Twelve Core 3.6Ghz
    Motherboard
    MSI PRO Z690-A DDR4 Motherboard
    Memory
    Corsair 32Gb Vengeance RAM
You cannot uninstall-reinstall just Outlook. You have to do the whole set.

I was hoping for a way of just dealing with Outlook
What about my suggestions in post #6 such as my paras 1,2,4?

Denis
 

My Computer

System One

  • OS
    Windows 11 Home x64 Version 23H2 Build 22631.3447
Very good advice, maybe an easier way. Uninstall the new outlook 365 from start-installed apps-advanced settings and then uninstall. If that does not remove it-no worries--go to next step. In the windows search bar, type Outlook--the legacy outlook should appear and then click on it and install it. Once its installed, configure it and away you go.. This worked for me and hope it helps..
 

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    Sony Vaio American Megatrends
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    900
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    Norton 360
the legacy outlook
What?

Uninstall the new outlook 365
You can only uninstall the whole of Office not individual Office applications.


I get the impression that your post mixes up references to MSOffice Outlook 365 with those to the Windows app called Outlook.


All the best,
Denis
 

My Computer

System One

  • OS
    Windows 11 Home x64 Version 23H2 Build 22631.3447
oop's forgot to add that if all that does not work out for you, go to your control panel and click on and highlight your office installation ( Microsoft 365) , then click on "change" above which is next to uninstall. When you click on "Change" you can do a local or online repair of your Microsoft 365 installation wherein it should correct any problems you were experiencing. I would recommend doing an online repair as it puts a fresh installation on the system. Doing a local repair uses the files you have on your computer and is not recommended if you were having problems with one of your office programs. If the online repair process puts the new Outlook on the system, no worries, just search for the legacy Outlook as explained earlier and install that. All done...:)
 

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    Sony Vaio American Megatrends
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    6 GB
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    Realtek
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    Dell 24" ST2420
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    1920x1080
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    Samsung SSD 8440 EVO
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    logitech
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    logitech
    Internet Speed
    900
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    Google Chrome
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    Norton 360
I have a Win11 Notebook that came with a year of Microsoft 365, has this feature in Control Panel, Programs and Features:

1708383462238.png
 

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Try 3 is absolutely correct......when I did an online repair as mentioned it did reinstall the whole mix of Office applications and not an individual Office application. Did not mean to make it confusing,
I'll leave it to the VIPS...
 

My Computer

System One

  • OS
    Windows 11 Pro 64 Bit
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    Laptop
    Manufacturer/Model
    Sony Vaio VPCF1
    CPU
    Intel Core I7 740QM 1.73 GHZ Clarksfield
    Motherboard
    Sony Vaio American Megatrends
    Memory
    6 GB
    Graphics Card(s)
    NVidia GT330M
    Sound Card
    Realtek
    Monitor(s) Displays
    Dell 24" ST2420
    Screen Resolution
    1920x1080
    Hard Drives
    Samsung SSD 8440 EVO
    Keyboard
    logitech
    Mouse
    logitech
    Internet Speed
    900
    Browser
    Google Chrome
    Antivirus
    Norton 360
Get the OfficeSetup executable from your Subscription page and run it..., it'll know what to do.

6449 - Copy.jpg
 

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    Windows 11
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    ASUS ROG Strix
  • Operating System
    Windows 11
    Computer type
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    Manufacturer/Model
    ASUS VivoBook

My Computers

System One System Two

  • OS
    Windows 11 Pro 23H2 (Build 22631.3296)
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    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.
When outlook doesn't start for me...I use the task manager and just kill outlook. Then I restart outlook and it normally starts right up. Simple but effective.
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Built
    CPU
    AMD Ryzen 7 5800X
    Motherboard
    GIGABYTE B550 AORUS ELITE AX V2
    Memory
    32GB
    Graphics Card(s)
    Nvidea??
    Sound Card
    MB Sound only
    Hard Drives
    m2.nvme
    PSU
    Seasonic Focus
    Case
    Cougar
    Cooling
    Enermax Liquid CPU
    Keyboard
    Logitech K800
    Mouse
    Logitech MX Master 3
    Internet Speed
    2.5 GB
    Browser
    BRAVE
    Antivirus
    Windows Defender
When outlook doesn't start for me...I use the task manager and just kill outlook. Then I restart outlook and it normally starts right up.
Another thing I noticed with Outlook, 'Hide when minimized' is always on by default, after an update!
 

My Computers

System One System Two

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    ASUS ROG Strix
  • Operating System
    Windows 11
    Computer type
    Laptop
    Manufacturer/Model
    ASUS VivoBook
Thank you all. Useful information as usual filed away for the future.

My latest news - I tried Try3's first suggestion which, as happened when I tried that myself earlier including a re-boot, didn't seem to do anything. It was late so went to bed. What I did do just before doing so, was to change the Outlook password via Plesk (I manage the village 's domain and web site and my email address is based on that). This morning I got access to Outlook, changed the password to the new one and it worked!

If a non- AI enabled computer is capable of causing this amount frustration I shudder to think what a malevolent AI one will do! 👹
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Updated Chillblast
    CPU
    Intel i7 12700K Twelve Core 3.6Ghz
    Motherboard
    MSI PRO Z690-A DDR4 Motherboard
    Memory
    Corsair 32Gb Vengeance RAM

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