How to Fix Error Code [pii_email_c1646d6cd617ef1be6ab]

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Are you facing error code [pii_email_c1646d6cd617ef1be6ab]? Or do you want to solve the problem of this error code? Here, we will give you some guidelines that will help you solve these error code problems. So, without wasting any time, let’s start!

Microsoft Outlook

MS Outlook plays a vital role in communication and is used to send or receive emails. It always functions well but can sometimes run into problems as well. This program still has many errors or bugs, and we do our best to help you fix these problems.

What is [pii_email_c1646d6cd617ef1be6ab]?

Error code [pii_email_c1646d6cd617ef1be6ab] is an error encountered in MS Outlook.

When you see the error code, that means your Outlook is not working correctly. So, what can you do to make Outlook work? Just follow the simple steps below:

Reasons for Error code:

Error Code [pii_email_c1646d6cd617ef1be6ab] can be caused by the following reasons:

  • The use of multiple-accounts creates a disturbance.
  • MS Outlook app needs updating.
  • If the windows OS is incompatible.
  • Disturbing the default settings can also cause this error.

5 Methods to Solve Error Code [pii_email_c1646d6cd617ef1be6ab]

Method #1: Clean cache and cookies

Clearing cache and cookies can delete your saved passwords and other information so make sure you have an alternate backup before attempting the solution.

Clear Cache for Error Code [pii_email_c1646d6cd617ef1be6ab]

  • Open your computer’s accessibility window.
  • You can see more choices, by clicking the three dots in the top right corner.
  • Select more tools from there.
  • From the next tab, choose Simple Browsing Details. You can instantly see a list of different options.
  • Check the cookies and other site data and the Cached images.
  • Click on Clear Data and wait until it’s finished.
  • Exit the page and open your Outlook account a few seconds later and check whether the error code is resolved.
  • Restart your PC and check if the [pii_email_c1646d6cd617ef1be6ab] error is resolved or not. If not, then try the next method.

Method #2: Outlook update

Make sure the device specifications of your PC meet the newest version of Office.

  • In most cases, the earlier version is deleted when you execute the Microsoft Office Setup program on a computer with a previous version of Office.
  • However, there are instances where an uninstallation is required, if you encounter installation errors or problems.
  • You will not remove your Office files when you uninstall Office until the new version is installed, but you might want to back up your Outlook data files if your official version contains Outlook.
  • See Locating and transferring Outlook data to a device.

Method #3: The fixed edition of Outlook

By uninstalling the root file from the control panel, you can quickly solve minor program-related issues. After the MS Office Suite is deactivated successfully, a new installation will be needed. If you don’t know how to uninstall a program or Outlook software from Windows, follow the step-by-step guide below.

Reinstall Outlook Error Code [pii_email_c1646d6cd617ef1be6ab]

  • If you do not want to lose your email history, back it all up.
  • Open the start menu by either clicking the start button or pressing the Windows key on the keyboard.
  • Search the control panel and launch it
  • Select Programs and Features.
  • Search for Office 365 from the list of installed software on your computer and launch it.
  • If you want to uninstall the software, Windows will ask you for confirmation.
  • Allow the uninstallation process to proceed and let the windows take care of the rest.
  • After the completion of the uninstalling process, download and install the latest version of MS Outlook.

This should remove any errors that you were encountering.

Method #4: Use the Web application

  • Go to the Options at the top, and in the navigation pane, pick the Outlook Web App edition.
  • Clear the checkbox for the light edition.
  • Save the changes.

Method #5: Contact Microsoft Customer Support

If you cannot resolve this problem despite following all the above-mentioned measures, you can contact the Microsoft support representative for assistance. Microsoft provides its customers with exceptional support and services and can help you overcome this problem.


This article has provided useful steps for resolving the [pii_email_c11646d6cd617ef1be6Ab] error code. We hope that one of our methods has helped you fix this error. If you are still not able to solve it, please contact Microsoft Support Team for direct assistance.

Other Common Outlook Errors