But why does the Microsoft suspicious connection blocked issue happen?

Lets figure it out via this post on theMiniTool Website.

Microsoft Suspicious Connection Blocked

First of all, what is the Microsoft suspicious connection blocked notification?

You may see this warning message from some security software, such asBitdefender.

This notification can be triggered by an attempt to access an HTTPS domain that has security certificate issues.

Thats why the Microsoft suspicious connection blocked notification pops up.

Step 2: ClickReset settingsand then clickRestore parameters to their default values > Reset.

before you roll the editing, youd better back up this file in case something goes wrong.

If you are looking for some excellentbackup software, MiniTool ShadowMaker can be a better choice for you.

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localhost name resolution is handled within DNS itself.

127.0.0.1 localhost

Step 4: Save it by pressingCtrl + Sand close it.

Step 5: OpenRunby pressingWin + Rand typeC:\Windows\System32\drivers\etcto enter.

The steps are easy.

You just need to open Microsoft Edge and grab the three-dot icon to chooseNew InPrivate window.

Then attempt to get into the website.

OpenRunand enter the following commands one by one to delete all the files in the folder.

After that, try your Edge web app and verify if the suspicious connection blocked notification appears again.

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Hope this post is helpful for you.