11 Fixes For [pii_email_e7ab94772079efbbcb25] Outlook Error

Microsoft Outlook may not have the biggest piece of the pie like Gmail. But it is still the preferred email client of over 400 million-plus users globally. While many of you may shy away from using Outlook, it is a popular email client for companies. However, Outlook is notorious for generating errors that halt day-to-day productivity.


If you encounter the Outlook Error [pii_email_e7ab94772079efbbcb25], and don’t have a solution yet. Then don’t be hapless because we’ve got your back. The Outlook Error [pii_email_e7ab94772079efbbcb25] stems from a variety of reasons.

But it is fixable by doing a few tweaks to your Outlook email client and your computer settings. We will list all the possible solutions to help you resolve your Outlook email errors. So, without further ado, let’s jump into the post and find the root cause of your Outlook error code.

What Causes Outlook Error [pii_email_e7ab94772079efbbcb25]?

There can be many underlying causes Outlook Error [pii_email_e7ab94772079efbbcb25]. You may have one or multiple problems with your Outlook app. Some of them are:

  • Improper or corrupted installation of the Outlook app on your computer.
  • An outdated Outlook app version is present on your computer.
  • You are using and switching among many Outlook accounts in your app.
  • The cache files present in your app cache/browser cache are old or corrupted.
  • You have a weak and unstable internet connection that disrupts email communication.
  • The outlook app is facing app conflicts with another e-mail client running on your system.

11 Solutions to Fix Outlook Error [pii_email_e7ab94772079efbbcb25]

Try these 11 easy solutions that may resolve the Outlook Error [pii_email_e7ab94772079efbbcb25] code. Try to attempt the following fixes in your Outlook app in the given sequence.

  1. Separate the emails and remove the unnecessary ones
  2. Clear Application Cache
  3. Delete Windows cache
  4. Clear Browser Cache
  5. Update the Outlook Application
  6. Run SCANPST.exe Tool
  7. Check Your Internet Connection
  8. Set or Modify the SMTP Port
  9. Look for the Duplicate Account
  10. Assess for Windows 10 Troubleshooting Center
  11. Reinstall The Microsoft Office Package

Separate the emails and remove the unnecessary ones

Try to declutter your mailbox and discard all the trash and spam emails. If you use many Outlook accounts in the app, chances of encountering an Outlook error code are high. Log out of all the unused or less used Outlook accounts in the app. Then re-login with your primary Outlook account and attempt to send/receive mail.

Moreover, if you need to use multiple accounts in the app, try to be frugal with adding more accounts. Or, you can use the system browser for accessing less-used Outlook email accounts. Check to see if the Outlook app generates the error code after using this fix. If it does, move to the next step in the list.

Clear Application Cache

The Windows application cache stores temporary files for speeding up the app launch. As the cache size gets bigger, the older and unused files and settings may go corrupt.

When you try to run and use the Outlook app, the cache may cause problems. So, deleting your app cache can fix the outlook [pii_email_e7ab94772079efbbcb25] error code. To delete the Outlook app cache, do as follows:

  • Press Windows key + R on your Windows computer to launch the Run window.
  • Now, type %localappdata%\Microsoft\Outlook in the text input box and click on the OK button.
clear outlook cache
  • The file explorer will open the app cache folder of Outlook.
  • Now, press Ctrl + A to select all the cache files. You can also click one file and then drag to select all files of the cache.
delete outlook cache
  • Now, right-click and then select the Delete option in the context menu.
  • You can also press the Shift key + Delete key to delete the selected cache files.
  • Restart your computer and then re-run the Outlook app to check for the error code.

Note: Using the Shift key + Delete key method will delete the cache data permanently. Use the normal delete option if you want to recover the cache file later on.

Delete Windows cache

The above step explained to delete specific app cache. You can also clear out the Windows cache to remove unused and problematic files. To clear Windows cache, do as follows:

  • Press Windows key + R on your Windows computer to launch the Run window.
  • Now, type %temp% in the run box and press the Enter key.
clear browser cache
  • The explorer will open the temporary files folder of your system.
  • Now, press Ctrl Key + A to select all the files in the folder.
clear windows cache
  • Then press the Delete key to delete all the selected files.
  • Now, restart your computer and open the Outlook app to check if the error occurs again.

Note: Some files may not delete even after executing the delete command. These files may belong to running applications on your computer. You can try closing these apps then delete the remaining files in the folder.

Clear Browser Cache

You can try clearing the browser cache if you use Outlook in the browser and encounter the same error. To clear browser cache, do as follows:

  • Press Win Key + R and type chrome in the text box. Click on Ok to open chrome.
  • Now, click on the three vertical dots and select the Settings option from the context menu.
 three vertical dots
  • Click on the Security and Privacy tab and then click on the Clear Browsing Data option.
clear all browser cache
  • Now, expand the Time Range option and select the “All Time” option from the list.
  • Select all the checkboxes and click on the “Clear Data” button.
clear data
  • Now, restart your browser and open the Outlook.com website.
  • Check to verify if the error persists when you send a mail.

Note: Clear Data option can remove all your cached data, cookies, and logs. You will have to re-login to your Outlook account after that.

Update the Outlook Application

An outdated Outlook app can clash with new Windows updates. If you keep it not updated for too long, it may become incompatible over time. To update your Outlook app to the newest version, do as follows:

  • Open the Outlook app on your computer.
  • Now, navigate to the right-hand side of the dashboard and click on the Account option.
update outlook
  • Move to the Product Information section on the left-hand side. Now, find the Office Updates section and click on the Update Options icon.
  • Click on the Update Now option and let it download and apply the latest updates. 
update outlook app
  • If you have a low-bandwidth internet connection, it may take some time to download the updates.
  • Now, restart the Outlook app and check if you can send a mail without any error.

Run SCANPST.exe Tool

SCANPST.exe Tool is an inbox repair tool present in the Microsoft Office package. This repair tool can help to check the condition of Outlook data files. It can also help you to diagnose damaged files and fix the errors and avoid reinstallation. 

  • Open file explorer on your computer.
  • Click on the C drive and then find the program files folder in the list.
  • Open the Program Files folder and then find the Microsoft Office installation folder.
  • Find the Root folder and then open the Office 16 folder present inside.
  • Now, locate the Scanpst.exe tool. You can type the name in the search box to find it.
  • Right-click on this app and select the run as administrator option.
  • The app will ask you to enter the name of the file you want to scan. 
use scanpst tool for outlook error
  • Click on the Browse option and browse to the folder. 
  • Select the PST file you want to check and then click the Start button.
  • The Scanpst tool will now analyze the PST file for errors.
  • If the tool finds any errors it will display a message describing the state of the file. 
  • Before hastily clicking on the repair button make sure to back up your PST file. 
  • You can browse the computer and select a folder location on your drive. 
  • After that, click on the repair button and then wait for the Repair completion message. 
  • Click on OK to close the repair tool window.
  • Now, reopen the Outlook application and then try using the mail options.

If you are unable to find the PST file of your Outlook application, then do this first.

  • Open the Outlook application on your computer.
  • Go to file settings and then navigate to the Account Settings.
  • In the account settings tab, click on account settings from the drop-down menu. 
use scanpst tool for outlook error
  • Switch to the Data Files tab and it will show the name of your Outlook data file
  • Click on it and then click the Open File Location button. 
  • Copy the PST files from this folder and then save them to a convenient folder on your computer. 
  • Now, you can easily find and repair your PST file using the Scanpst tool.

Note: Scanpst is a capable utility bundled with the Outlook application. There are other third-party software available to repair PST files. But we recommend you to use the inbuilt tool for security reasons. 

Check Your Internet Connection

Internet speed is a major hindrance in using the Outlook application. If you have a slow internet connection then Outlook may generate email errors. The reason behind this error is that the application is unable to connect and transfer data. You can use Ookla Speedstest or Fast.com to check your internet speed.

Apart, from the speed issue, you may also have a frequent disconnection issue from your ISP side. Whenever the internet disconnects during an ongoing mail communication, Outlook prompts an error.

Sadly, there’s no way to resolve this except changing your internet provider to a reliable one. Before doing that, connect your PC or laptop with the Ethernet cable. By doing this, you can check whether the internet disconnection issue is with Wi-Fi only or not.

Set or Modify the SMTP Port

The SMTP Port is responsible for sending the mail from your Outlook application. If you or another user changes the SMTP Port settings, Outlook will not be able to send emails.

SMTP Port is a complex setting that should be left the way it is. If you don’t know how to manipulate ports, you should use the default settings. The best course of action is to reset or modify the SMTP Port in outlook. To modify the SMTP Port, do as follows:

  • Open the Outlook application on your computer and then click on the file button.
  • Now, click on account settings. Now, e-mail settings for your account will open by default.
  • Click on the primary email account and then click the change button located above.
set smtp port in outlook
  • Now, click on the More Settings button located in the Change account window. 
  • The internet email settings window will open. Click on the Advanced tab and input 587 in the SMTP Port box. Click on OK to apply changes.
  • Now, test the new settings by clicking on the Test Account Settings button.
  • It will attempt to send an email. The task will show a green checkmark if the mail is successfully sent. 
  • Now, click on the Next button and then click on finish to complete your Outlook account setup.

Note: There are other port numbers also used for connecting to the SMTP server. But it is best to use the 587 port as it supports TLS encryption. 

Look for Duplicate Accounts

Using Duplicate Accounts in outlook can trigger the error. The best practice is to keep only a single outlook account within the app. To Look for duplicate accounts, do as follows:

  • Open the control panel on your computer.
  • Now open the User Accounts option and select the Mail settings option for outlook.
delete duplicate outlook account
  • Then click on the E-mail accounts button to reveal the number of active accounts in outlook.
delete duplicate outlook account
  • Click on one email account and then click the Remove button. 
  • Your selected outlook account will be removed from the app.
  • Repeat this process to remove all unused and duplicate accounts in Outlook.

Check the Windows 10 Troubleshooting Center

You can check the Windows troubleshooting Center to find problems with the Outlook app. Repeat the following steps:

  • Click on the Start button and find the Outlook app.
  • Right-click on the app and select open file location.
  • It will take you to the original app file.
  • Right-click on the Outlook app and select the Troubleshoot Compatibility option.
  • The program compatibility troubleshooter window will open.
troubleshoot outlook
  • Click on the “Try recommended settings” first and then attempt to run Outlook.
  • If you encounter any errors, repeat the first three steps.
  • Now, select the “Troubleshoot Program” option.
  • If you still aren’t able to use Outlook without errors, then consider a complete reinstall. 

Reinstall the Microsoft Office Package

Use the “Reinstall the Microsoft Office Package” as the last resort. It is possible that MS Office files got corrupted during installation. A complete reinstallation of MS Office can help you run a fresh, error-free version of Outlook.

  • Click on the Start button and type the control panel.
  • Open the Control Panel and find the Uninstall a Program setting.
  • Now, find the Microsoft Office installation from the list and right-click on it.
uninstall outlook
  • Select the Uninstall option and remove the complete program from your computer.
  • The setup will request a system restart to wipe the settings.
  • Now, go to the Microsoft Office website and download the preferred version.
  • Install it by using default settings and then open the Outlook application.
  • Sign in with your account and configure the SMTP Port
  • Test the mail settings and check if you encounter an error or not.

Note: Make sure to copy all your documents into a backup folder. Otherwise, you may lose important office docs from other MS Office apps.


These were the 11 solutions to solve the error. Attempt them in the given sequence. The majority of outlook errors are fixed with a new update. But if you still are unable to send mails, then SMTP Port settings need a reset. Reinstall the Microsoft Office Package only if all other methods fail.


What Generates The Error [Pii_email_e7ab94772079efbbcb25]?

There can be many reasons behind the error [pii_email_e7ab94772079efbbcb25] code. The most common ones are corrupt cache, old app version, and improper installation. Outlook can also face errors if the SMTP port is not properly configured in the app. 

How To Fix Email Error?

You can try updating the app and clearing cache files first to fix email errors. Then, you should attempt to troubleshoot the app for missing packages and incompatibility. Lastly, a clean reinstall can resolve persistent errors.

How To Fix [Pii_email_e7ab94772079efbbcb25] Error Code?

You can try to fix [pii_email_e7ab94772079efbbcb25] error code by checking PST file. Outlook has an inbuilt inbox repair tool that checks and repairs PST files. Then, you can restart outlook and attempt email communication.

How To Fix Outlook Error [Pii_email_e7ab94772079efbbcb25]?

Make it a habit to update your Outlook app and clear cache files. You can also use the inbox repair tool to fix outlook error [pii_email_e7ab94772079efbbcb25]. Moreover, use the correct SMTP, IMAP, and POP3 settings for your app.