How to Fixed pii_email_37f47c404649338129d6 error code in 2021?

How to Fixed pii_email_37f47c404649338129d6 error code in 2021?

It is possible to have an issue when you are sending an email from your account from Outlook express. Next error:” Fail to attach the server. it’s Socket Error 10051 Error Number: [pii_email_37f47c404649338129d6]
What is a mistake [pii_email_37f47c404649338129d6], and why does it occur?

Error no: [pii_email_37f47c404649338129d6] is because of a conflict with the SMTP server, and it occurs because of the lousy setup of your software preferences. you’d wish to countercheck that every of the entered parameters is proper with numbers of the port, the authentications, and therefore the secured connection.

How to do fixing Error Number: [pii_email_37f47c404649338129d6]?

There are more solutions to unravel this error; however, we are becoming to debate the six best and shortest methods.

Before starting the solution, check your account settings:


Make Click on Tools menu, select one account that causes the matter, and click properties.
Next, look if the name of the outgoing mail server (SMTP) is correct. As next pictured:
If the server asking authentication, check on My server requires authentication.


Click on More Settings
Check the SMTP port number is that an equivalent shown to your F.A.E.
If the connection must be safe, then check the mark; this server requires secure connection SSL. As pictured below:


my server requires a secure connection

Six easiest methods to fix error [pii_email_37f47c404649338129d6]

Microsoft Outlook error [pii_email_37f47c404649338129d6] occurs on windows ten that indicate the matter with Outlook Express or Windows Mail. This error usually happens because of the struggle between the S.M. T.P. Servers when one user tries to send mail without the right setting of the account.

In this guide, we are becoming to planned out six secure methods to unravel the error [pii_email_37f47c404649338129d6], which can help you.

Method 1 Fix using Programs and Features Tab.

First, plan to solve this Outlook Express error through program and features by the auto-fix tool:

Make to Click on Windows button and search program and features (you can also open the control panel and attend the programs and therefore the features)
Search for Microsoft Office 365 within the programs and features. (or select any office applicable application)
At the front of the Programs and, therefore, the Features window, make click on the edit button to settle on “Repair” and, therefore, the following advice on the screen.
When it’s ended, the process, make one restart to Outlook, and check if the error code is deleted; if this persists, then try method 2.

Method 2. Check the server requirement setting as Follow:

Open Outlook from applications.
Open File.
Account Settings.
Click the email tab from the account setting window, and you’ll see the next window as below:


select an account in Outlook
Select the email address from that list.
Make click on the email account then click on more settings.
Now open the online setting of the email.
Open an outgoing server new tab.
Mark, in the first option, my outgoing server (SMTP) requires authentication.
Click okay to save all of settings.


My server requires authentication.

After clicking on okay now, restart Outlook, after see if error [pii_email_37f47c404649338129d6] is deleted however go to the next solution.

Method 3. Test for Duplicate Accounts and Delete Duplicate Accounts.

Still didn’t get the solving? We must look if the accounts are duplicated. It is possible to be the reason for error [pii_email_37f47c404649338129d6], and deleting duplicate accounts could even be the possible solution for it. Follow the alternatives below.
Click Menu from Outlook.
Open settings of account from the menu and click on the mailing tab.
Check the duplicate account in the list and choose one.
Click on remove to urge obviate a duplicate account. Look at the next picture:


  • remove the duplicate account in Microsoft outlook

After deleting the duplicate account, restart the Outlook and check if you still see Error Code [pii_email_37f47c404649338129d6]. Then the matter could also be a touch tricky; let’s go to the fourth method and see if we are solved.

Method.4 Change Server Port Number.

Open the Outlook
Click on the file and attend the Setting of Account.
Click on the email from the account setting and choose your email account from the list.
A new window Email Account goes to be created.
Go for more settings and click on Internet Email Settings.
Click on Advanced Tab
Now to vary the (S.M.P.T.) port number from 465 to 587.
Click on okay to save lots of changes. See the next image.


change SMTP the number of the port in Outlook setting Smtp number of the port
After the settings are ending, restart Outlook and look that the error [pii_email_37f47c404649338129d6] is deleted if you’re lucky the matter is solved if not we still have method 5.

Method 5. Check Antivirus Software on your window.

In this method, there could also be an easy solution to repair the error. Disable Antivirus for a brief time goes to stop Microsoft Outlook from making a connection from the email client’s email.

Disable Antivirus as on follow Steps

Select Start of Settings
Click on Update and Security
Click on Security of Windows
Choose the Virus/ threat protection,
Use the settings (or Virus & threat protection settings in previous Windows 10) versions.

Every Antivirus program has different settings to disable it. Check consistently with the software you use.

In case error [pii_email_37f47c404649338129d6] still persist, let’s go to method six.

Method 6 Make an Uninstall Outlook and after make Reinstall.

So you are in method six, and it’s because the above five methods didn’t work. Now the last solving method for this issue [pii_email_37f47c404649338129d6] is to make uninstalling the Outlook and do reinstall once again. After when installing again, try adding a replacement account.

Uninstall Microsoft Outlook with the subsequent steps:

Click Program and Features from the control panel.
Do Search For Microsoft Office 365 ( Outlook is that the part of Microsoft Office 365)
Double click on Microsoft office 365.

Follow subsequent instructions on the screen to end uninstalling.
After finishing uninstallation, install Microsoft outlook once again.
Make one replacement account, add it in Outlook, and inspect sending the email back.


In this article, we showed six solving methods for this kind of error [pii_email_37f47c404649338129d6]. We hope one of its work for your case and issue is solved; if you don’t, please write a comment below, we’ll find the possible solution.