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{FIXED} How to Fix [pii_email_c75373ce5b34bf577425] Error Code 2021?

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Hi guys, today I’m here with a solution to an error problem. Error!!! Yes, the error which every one of us would have faced in our daily routine. Business professionals may be familiar with the content that I’m trying to convey.

Okay, let’s tear down the suspense.

Microsoft Outlook is an e-mail application by Microsoft Inc. It is a personal information manager. Widely used to sent and receive e-mails throughout the world. It serves as a stand-alone application, multi-user software and etc. So, due to this an error code appears [pii_email_3ceeb7dd155a01a6455b] Error while conversing.

No need to panic. As said earlier I’m here with a solution to your problem. The error is usually caused by a dispute with the SMTP server. Significantly, the error may be due to a bad account setup in the software preferences. Therefore you have to check with the port numbers, authentication, and secure connection. No need to worry. You can easily rectify the issue with my solutions. Continue reading the below guide.

REASONS FOR CAUSING [pii_email_3ceeb7dd155a01a6455b] Error CODE

This pii_email_3ceeb7dd155a01a6455b Error code may appear due to the following reasons.

  • Caused by the installation process due to other software installed on your PC.
  • Your Outlook may conflict with other e-mail accounts.
  • An outdated version of the Microsoft Outlook.
  • If you are using the broken version of Microsoft Outlook.
  • Avoiding clearing cache.
Also, Read  How to Fix pii_email_8f9c4447709c40f01262 mail Error? [Solved]


Navigate to Tools menu and click on Accounts. Identify the account which is causing you problems. Access the Properties menu and check with the following settings.

STEP1: Check that the name of the outgoing mail server is the proper one.

STEP2: If your server requires authentication, analyze the server option.

STEP3: Check with the port number of the outgoing mail server .

STEP4: Make sure that the connection is secure.

Don’t forget to save the changes and try now by sending a message. Let’s take a look at the solutions to rectify the error.

HOW TO USE AUTO REPAIR TOOL TO SOLVE pii_email_3ceeb7dd155a01a6455b

However, the auto repair tool can automatically detect and resolve the pii_email_3ceeb7dd155a01a6455b Error. Continue with the following steps to solve this error.

STEP1: Firstly, download a auto repair tool to identify the error.

STEP2: Type ‘Control Panel’ in the search bar.

STEP3: Following that click on the Programs and Features option.

STEP4: Find out ‘Office 365’ in the Programs and features option.

STEP5: Select the ‘Repair’ option.

After completing the process, restart the Outlook and continue with your process.

CHECK WITH THE SERVER REQUIREMENTS TO FIX pii_email_3ceeb7dd155a01a6455b

As mentioned earlier you may face issues due to error with your server also. So, resolving the issues with your server can help you in resolving the error.

Also, Read  {FIXED} How to Fix pii_email_2d113871790217b2253f error code in 2020?

STEP1: Open the Outlook application.

STEP2: Navigate to file –> Account settings and click on the messaging tab.

STEP3: Select your E-mail account from the list.

STEP4: Go to Internet messaging settings.

STEP5: Open the Outgoing server tab and select My outgoing server (SMTP) requires authentication.

STEP6: Click OK to apply the changes.

If the error still persists, continue trying the following methods.


Duplicate accounts or the account which you may have accidentally signed in may also cause an error. So, deleting those duplicate accounts can resolve your error with Outlook.

STEP1: Go to the Outlook menu.

STEP2: Navigate to Account settings –> messaging tab.

STEP3: Find out the duplicate account, select and click on the delete button.

Now, restart the Outlook. If the error continues you continue trying the following methods.


As done in the earlier method open the Outlook. Go to file–> Account settings–> messaging tab. Select your e-mail account and continue with the following procedures.

STEP1: A new window called E-mail account will open.

STEP2: Click on the More settings option. You can notice the opening of the Internet messaging settings window.

Also, Read  How to Fix pii_email_07cac007de772af00d51 mail Error? [Solved]

STEP3: Open the Advanced Tab.

STEP4: There, change the Outgoing server port number(SMTP) to 587.

Once finished, click OK to apply changes. If this method has not rectified your error continues the following method.

Solution to fix pii_email_3ceeb7dd155a01a6455b

REINSTALLING OUTLOOK TO SOLVE pii_email_3ceeb7dd155a01a6455b

If all the methods turn out to be no use, finally try uninstalling and reinstalling the application. Because reinstalling cures most of the errors like pii_email_3ceeb7dd155a01a6455b uninstall and reinstall the application.

STEP1: Open the Outlook application.

STEP2: Go to programs and Features and find the Microsoft Office 365.

STEP3: Click Uninstall and follow the instructions on the screen to uninstall the application properly.

STEP4: Once uninstalled, reinstall the application on your desktop.

You are now required to create a new Outlook account. Create your new account and try sending E-mail. This method will hopefully resolve your pii_email_3ceeb7dd155a01a6455b error problem.


That’s all guys. I hope that you would have rectified your pii_email_3ceeb7dd155a01a6455b issue. At least by using the last method of reinstallation. You can also try by clearing caches and cookies, upgrading your Outlook account. Stay on the track and update yourself with technology.

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