Windows 10: Outlook New is unusable because: Defender

Discus and support Outlook New is unusable because: Defender in Windows 10 Software and Apps to solve the problem; Switched to Defender after years of using another security tool.Seems to be working fine, but now I want to switch to using New Outlook.And I get:So,... Discussion in 'Windows 10 Software and Apps' started by G. van de Ven, Apr 23, 2025.

  1. Outlook New is unusable because: Defender


    Switched to Defender after years of using another security tool.Seems to be working fine, but now I want to switch to using New Outlook.And I get:So, Microsoft Defender SmartScreen blocks outlook.office.com.I understand that this is the 'reputation-based protection' kicking in.Why does Microsoft think that their own reputation is so bad that they need to protect me from themselves?Fortunately Outlook Classic still works.Is this just me or do other people also have this issue? Should I simply disable smartscreen altogether?

    :)
     
    G. van de Ven, Apr 23, 2025
    #1
  2. tfwul Win User
    tfwul, Apr 23, 2025
    #2
  3. New Outlook for Windows

    In 2024, Microsoft will push the New Outlook for Windows to all laptops and remove the "Mail and Calendar" app.

    I just tried out the New Outlook for Windows, and I found it did not work for me.

    When comes 2024, can I refused to have the New Outlook for Windows installed on my laptop and stop the removal of "Mail and Calendar"

    If that is not possible, would someone please suggest another app that will work the same as "mail"

    The main reason for not using the New Outlook for Windows is that it is not possible to have group mailing.

    I tried to setup a group contact list. When I entered that list in the "to" field, New Outlook for Windows cannot send the mail. I have to enter all email addresses manually.

    Another minor problem is that I have multiple email accounts, each account must have its own contact list when using New Outlook for Windows.

    In the Mail app, you only need one contact list, all accounts can use that same list.

    Thanks

    Cent.
     
    Centeresmith, Apr 23, 2025
    #3
  4. Mako284 Win User

    Outlook New is unusable because: Defender

    Outlook 2016 Flickering in Windows

    Hans,

    If you read through the posts, your are providing the same basic steps for correction that every other tech has suggested and they never work.

    Microsoft needs to take this issue seriously. We get a new tech every couple of weeks to start the same basic troubleshooting steps and never escalating the issue to a higher tier.

    Please escalate this issue. It is debilitating and causes Outlook to be unusable.
     
    Mako284, Apr 23, 2025
    #4
Thema:

Outlook New is unusable because: Defender

Loading...
  1. Outlook New is unusable because: Defender - Similar Threads - Outlook unusable Defender

  2. Outlook New is unusable because: Defender

    in Windows 10 Gaming
    Outlook New is unusable because: Defender: Switched to Defender after years of using another security tool.Seems to be working fine, but now I want to switch to using New Outlook.And I get:So, Microsoft Defender SmartScreen blocks outlook.office.com.I understand that this is the 'reputation-based protection' kicking...
  3. My windows is blocked by unused outlook account

    in Windows 10 Software and Apps
    My windows is blocked by unused outlook account: It has been like 2 or 3 days since I upgraded to windows 11 from 10. My laptop was always locked with a pin number of 6 digits. There is absolutely no one that can touch it other than me.Today when I turned on the laptop, it is suddenly locked with a outlook account. I...
  4. My windows is blocked by unused outlook account

    in Windows 10 Gaming
    My windows is blocked by unused outlook account: It has been like 2 or 3 days since I upgraded to windows 11 from 10. My laptop was always locked with a pin number of 6 digits. There is absolutely no one that can touch it other than me.Today when I turned on the laptop, it is suddenly locked with a outlook account. I...
  5. Moving to OUTLOOK - Deleting old unused gmail accounts

    in Windows 10 Software and Apps
    Moving to OUTLOOK - Deleting old unused gmail accounts: Hello Brains Trust. Now I know this is not a Windows issue, it is in relation to my last post about moving to MS Outlook. Over the many years, I have created about 10 different GMAIL email accounts and there are some reasons but not important here. I am wanting to remove...
  6. Outlook PWA or New Outlook!!

    in Windows 10 Gaming
    Outlook PWA or New Outlook!!: I have a yahoo mail account and a Outlook PWA account on two live tiles "Windows 10". Up to a few days ago I also used the Mailbox/Calendar app with both accounts in it. I toggled over and tried the "New Outlook" a few weeks ago, but then went back to Mailbox app etc. Over...
  7. Outlook PWA or New Outlook!!

    in Windows 10 Software and Apps
    Outlook PWA or New Outlook!!: I have a yahoo mail account and a Outlook PWA account on two live tiles "Windows 10". Up to a few days ago I also used the Mailbox/Calendar app with both accounts in it. I toggled over and tried the "New Outlook" a few weeks ago, but then went back to Mailbox app etc. Over...
  8. New Outlook !

    in Windows 10 Gaming
    New Outlook !: Hi again, over the last few weeks I keep getting "Try new Outlook" in my Mailbox/Calendar app Windows 10. Although it's only a preview and with the thought of the Mailbox app being phased out I downloaded it. I am getting to like it now so the question is "should I remove the...
  9. Google new sign in scheme renders older version of MS Outlook unusable?

    in Windows 10 Software and Apps
    Google new sign in scheme renders older version of MS Outlook unusable?: Received a notice from Google about their new sign in technology that my MS Outlook 2010 will not be able to use. Anyone know more about this? [ATTACH]
  10. Computer unusable because of BSOD

    in Windows 10 Support
    Computer unusable because of BSOD: So i have been having BSOD issues for about a month or so, i cant even count how many clean installations and fixes i tried. this was my original post Windows freezes that require hard reset - Windows 10 Forums In the end i thought maybe it is windows 10 fault so i just...