Maybe you can help on this one as well. When first opening Outlook and with every incoming email, Windows Installer is launched wit the pop-up 'Preparing to install'. I'm running XP and the 2007 MS Office software.

You may experience an issue where Microsoft Office keeps asking you to sign in on your Windows 10 PC. The sign in window keeps popping up every few seconds repeatedly even after you have signed in already. This appears to be a bug that can be troubling especially when you are working on something important.

Windows installer keeps popping up in Outlook 2003, MS Office Support, Microsoft Office users forum with new users & experts. Topics include Word, Excel, Outlook, Access, Powerpoint, Publisher & Visio. Microsoft now pushes ads on most of its apps and services like Microsoft Edge. If we talk about the Edge Browser, it’s a great browser, but not worthy enough to be set as a default browser. After switching to Windows 10, lots of users have claimed that they are seeing pop-up notifications from Microsoft edge recommending other apps. My friend just bought a laptop with Windows 10 pre-installed. He also bought a retail version of Office 2016 and activated it. After each start of any of the Office 2016 apps, he received an Office 365 activation pop-up window saying: Let’s get started. Try (Get a free trial of Office 365) Buy (Buy Office from the Microsoft store).

Fortunately, there are a few methods to fix this sign in issue. Let’s see how.

Method 1: By Deleting the Credentials

Step 1: Deleting credentials in Control Panel

Step 1: Go to the Start button on your desktop and type Control Panel in the search field. Left-click on the result to open Control Panel.

Step 2: In the Control Panel window, Click on View by to set it to Small icons. Now, click on the Credentials Manager option.

Step 3: Now, under Manage your credentials section, go to Windows Credentials and find the Office 365 credentials. It will look like – MicrosoftOfficeXXData:XXXXXXXXX.

Delete all these credentials.

This is how, you can delete the credentials from control panel.

Step 2: Through Microsoft Office Accounts

Step 1: Open any Office program, for instance, MS Word and go to the File tab on the top left.

Step 2: Select Accounts from the menu and under the User Information section, sign out from all of your current accounts and close all Office apps.

Step 3: Through Registry Editor

Step 1: Press the Windows key + R together on your keyboard to open the Runcommand. Now, type regedit in the search box and press OK to open the Registry Editor.

Step 2: In the Registry Editor window, navigate to the below path:

Right-click on the Identity folder and select Delete from the context menu.

Now, restart your PC and your should not see the Office sign in request error anymore. But, if problem persists, try the 2nd method.

Method 2: By Deleting Cached Files in Upload Center

Step 1: Go to the Start button on your desktop and type Office Upload Center in the search field. Now, left-click on the result to open the app.

Step 2: In the Upload Center window, click on Settings.

Step 3: In the Microsoft Office Upload Center Settings window, click on the Delete cached files button.

Press OK to exit.

This should fix the issue of continuous sign in request by Office. If you are still facing the issue, try the 3rd method.

Microsoft Office Windows Installer Keeps Popping Up Mac

Method 3: By Deleting Credentials and Email Profile, and then Recreate It

Step 1: Go to the Start button on your desktop and type Mail in the search field. Left-click on the result to launch Mail.

Step 2: Click on the three horizontal lines on the top left and click on Accounts in the menu.

Step 3: Under the Manage accounts section, select the user profile you want to remove.

For instance, we selected the Outlook account here.

Step 4: In the next window, click on Delete account from this device.

Click on the Save button.

Step 5: Now that you are done deleting the email profile, you need to create a new email profile.

Follow the Step 1 and Step 2 as shown above to reach the Manage Accounts section. Now, click on Add account.

Now, follow the next steps as per instructions to create the new email account.

The problem should be gone now. But, if it doesn’t, try the method 4.

Method 4: By Checking if Encryption is Turn On

Step 1: Open Outlook in your PC and follow the below steps to enable encryption.

• Go to Account Settings
• Click on Change Settings
• Press the More Settings option
• Click on the Security tab
• Find the option that says – Encrypt data between Microsoft Outlook and Microsoft Exchange and turn it on.

This should resolve the issue of sign in request by Office every few second. If the problem still exists, try the 5th method.

Method 5: By Changing OneDrive Settings

Step 1: Press the Windows + E keys together on your keyboard to open the File Explorer. Now, on the left side of the pane, locate and right-click on OneDrive – Personal.

Click on Settings in the menu.

Windows 10 Installer

Step 2: In the dialogue box select the Office tab. Go to the File Collaboration section and uncheck the box next to Use Office applications to sync Office files that I open.

Press OK to save the changes and exit.

This should fix the log in issue with Office, but if it doesn’t, try the 6th method.

Method 6: By Updating Office

Windows Installer Keeps Running

Step 1: Open any MS Office program, for instance, MS Word. Go to the File tab and click on Account in the menu

Now, go to the Office Updates section on the right side of the window, click on Update Options to expand and select Update Now.

That’s all. These methods should help you fix the issue where Microsoft Office keeps asking you to sign in on your Windows 10 PC.

I find passion in writing Tech articles around Windows PC and softwares