How to Fix the [pii_email_37f47c404649338129d6] Error Code in Microsoft Outlook

Are you seeing the [pii_email_37f47c404649338129d6] error code when you try to open Microsoft Outlook? Don’t worry—you’re not alone. This is a common error that can occur for a variety of reasons. Many Microsoft Outlook users have been facing the same issue. The good news is that it’s usually easy to fix.

In this blog post, we will show you how to troubleshoot and fix this  [pii_email_37f47c404649338129d6] error code so you can get back to using Microsoft Outlook without any hiccups.

How to Fix the [pii_email_37f47c404649338129d6] Error Code?

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Though it is mostly used as an email application, it also includes a calendar, task manager, contact manager, note-taking, journal, and web browsing.

It can be used as a stand-alone application or can be connected to a network through the use of Exchange Server and SharePoint Windows services. Several third-party add-ins are also available for Microsoft Outlook. Due to its many features and applications, Microsoft Outlook has become one of the most widely used email clients today.

The [pii_email_37f47c404649338129d6] error code is caused by a conflict with the Simple Mail Transfer Protocol (SMTP) server. The SMTP server is responsible for sending and receiving emails. When there is a conflict with the SMTP server, the [pii_email_37f47c404649338129d6] error code appears. There are several ways to fix this error code, We have listed some of those methods below:

1. Clear your cache and cookies

One of the first things you should try is clearing your cache and cookies. To do this, go to your browser’s settings and clear both your cache and cookies. Once that is done, restart your browser and try opening Microsoft Outlook again. If this doesn’t work, try one of the other methods below.

2. Update your Microsoft Outlook

Another thing you can try is updating your Microsoft Outlook to the latest version. To do this, go to Microsoft’s website and download the latest version of Microsoft Outlook. Once it is downloaded and installed, try opening Microsoft Outlook again and see if the [pii_email_37f47c404649338129d6] error code appears again.

4. Use a web-based application

You can also try using a web-based application instead of the desktop application. To do this, go to your browser and type in “Outlook Web App” into the search bar. Once you are on the website, sign in with your credentials and see if you can access your email without any issues. If not, try one of the other methods below

5. Incorrect installation 

One of the most common reasons for the [pii_email_37f47c404649338129d6] error code is an incorrect installation of Microsoft Outlook. If you installed Outlook from a third-party source, it’s possible that the installation files are corrupted.

To fix this, uninstall Microsoft Outlook and then install it again from the official Microsoft website. Once you’ve done that, restart your computer and see if the error persists. If it does, move on to the next troubleshooting step.

6. conflicting software on your computer

Another possible reason for the [pii_email_37f47c404649338129d6] error code is conflicting software on your computer. Certain programs can interfere with each other and cause errors like this one. To fix this, try opening Microsoft Outlook in Safe Mode.

To do this, press the Windows key + R on your keyboard, type “outlook /safe” into the Run dialog box, and then hit Enter. If Outlook opens without any errors in Safe Mode, it’s likely that there’s a conflict with another program on your computer. Try temporarily disabling or uninstalling any other email programs or applications and see if that solves the problem.

7. Incorrect setting 

If you’re still seeing the [pii_email_37f47c404649338129d6] error code after trying these troubleshooting steps, it’s possible that there’s a problem with your account settings in Microsoft Outlook.

To fix this, go to File > Account Settings > Data Files > Add… > Choose Office Data File (.ost). Once you’ve done that, restart Microsoft Outlook and see if the error has been resolved.

8. Contact customer support

If none of the above methods work, then your last resort would be to contact customer support for assistance. They should be able to help you resolve the issue so you can get back to using Microsoft Outlook without any problems.


The [pii_email_37f47c404649338129d6] error code can be frustrating, but luckily it’s usually easy to fix. So if you are getting the [pii_email_37f47c404649338129d6] error code when trying to use Microsoft Outlook, don’t fret!

In most cases, the problem can be resolved by uninstalling and then reinstalling Microsoft Outlook, opening Outlook in Safe Mode, or changing your account settings. These are several things that you can do to fix it yourself before having to contact customer support for assistance.

Thanks for reading!

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