Internet explorer is already installed on this system

For specific compatibility reasons you occasionally need to uninstall Internet Explorer 11 and install 9 or 10.

You remove IE 11 from add remove programs. Download IE 10 or 9 and attempt to install it. You get the following message that claims " Internet Explorer 10 is already installed on this system"

From what I underrstood, apparently IE 11 is uninstalled but updates are not and hence the error.

I found the following script here that worked like a charm.
https://social.technet.microsoft.com/Forums/ie/en-US/bdfc3c23-c89c-497c-81e0-6ac60836e50e/cannot-install-ie-10-after-removing-internet-explorer-11?forum=ieitprocurrentver

Script:

FORFILES /P %WINDIR%\servicing\Packages /M Microsoft-Windows-InternetExplorer-*11.*.mum /c "cmd /c echo Uninstalling package @fname && start /w pkgmgr /up:@fname /quiet /norestart"

 

Note: Ensure that you hide the Update to IE 11 in Automatic updates.

 

 

 

 

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Setup Exchange Online Office 365 email account

How to setup and use an Exchange Online Office 365 email account 

Various versions of outlook on Pc & Mac

Instructions to setup your email account in various versions of Outlook on Pc & Mac are available at the link below.
https://support.office.com/en-us/article/Outlook-email-setup-6e27792a-9267-4aa4-8bb6-c84ef146101b

Set up office apps and email on a mobile device

The following link has instructions to setup your email on various types of mobile devices.
https://support.office.com/en-us/article/Set-up-Office-apps-and-email-on-a-mobile-device-7dabb6cb-0046-40b6-81fe-767e0b1f014f?ui=en-US&rs=en-US&ad=US

Using outlook in a web browser (no installation required)

Click on the following link & Sign with your full email address and password provided.

https://outlook.office.com/owa/

Help with navigating in Outlook on the web is available at the link below.

https://support.office.com/en-us/article/Getting-started-in-Outlook-on-the-web-for-Office-365-ab4caa06-a421-4be3-84e0-26fcffc99340?ui=en-US&rs=en-US&ad=US

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Error 1723 – There is a problem with Windows Installer package

Error 1723. There is a problem with this Windows Installer package. A DLL required for this install to complete could not be run. Contact your support personnel or package vendor.

  1. Navigate to C:\users\"username"\AppData\Local\
  2. right click on "temp"
  3. Go to properties , then the Security tab
  4. Give the user full rights to the folder.

Some additional options are LocalMachine\Administrators , Domain\Domain users

 

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Microsoft Outlook is auto accepting meeting requests into calendar

 How to turn off auto accept of meeting invites

Two options in Outlook can trigger auto accept of meeting invites.

  1. Outlook may have been configured to auto accept invites.

    1. Go to File >>Options >> Calendar
    2. Scroll down to " Automatically accept or decline meeting requests.
    3. Click on the button " Auto Accept/Decline"
    4. Uncheck all to turn off Auto Accept.

       

  2. You may have delegated access to your calendar

    1. Got to File>>Account Setting>>Delegate Access>>
    2. Select " My delegates and me"

      Delegate1

      Delegate2

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