How to Repair the “Not Implemented” Error in Outlook?

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I tried to send a mail but could not because of the Not Implemented Error in Outlook. If you have encountered such an error, you should read this article, as it discusses everything from causes to solutions and much more!

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The Not Implemented error in Outlook is a common issue that can occur while completing various Outlook functions. Unlike some, the Not Implemented error can affect various Outlook features such as sending or receiving emails, forwarding notes, etc.

Causes For “Not Implemented” Error in Outlook

Conflicting Add-ins: Third-party add-ins might conflict with existing ones, causing the Not Implemented Outlook error.

Faulty Installation: If the installation file is not up to standard or there are a few hiccups during installation, users can expect to experience Outlook issues.

Software/application update: An Outlook Update or a faulty Windows update can cause complications leading to this issue.
PST file Corruptions: PST file corruptions can cause several issues based on severity.

Damaged SRS file: An Outlook SRS file contains all the configuration details regarding sending and receiving Outlook mails. A damaged SRS file may be the reason you've come across a Not Implemented error.

How to Resolve the “Not Implemented” Error in Outlook?

1. Disable Addins

Addins in Outlook are a boon and enhance our Outlook experience. However, When you have a corrupted, incompatible, or conflicting add-in, you will experience Outlook issues like the Not Implemented error. In such cases, the solution is to disable the add-ins. You can do so by following the steps given below-

  • Open Run Command using Windows+R Shortcut.

Type in the command “outlook /safe” and click on Run.

  • Once Outlook Opens, Click on File.
  • Click on Options.
  • Go to the Add-ins Tab and uncheck all add-ins.
  • Verify results.

If this solves your issues, try each add-in individually to weed out the corrupted ones.

2. Disable Anti-virus

Antiviruses can restrict applications from carrying out specific functions they may consider a threat (in some cases, it’s not). Try disabling your Antivirus and check if Outlook works.

3. Recreate Outlook Profile

A corrupted Outlook profile could cause an Outlook not implemented error. One solution is simply creating a new shape to see if it's true. You can do so by following the steps below.

  • Open Control Panel.
  • Use the search bar to locate and open Mail.
  • Click on Add.
  • Fill in the credentials and set up your profile.
  • Verify results.

4. MS Office Quick Repair option.

This method will be helpful if the underlying cause lies within the installation file or installation process. You can do the same by following the steps below-

  • Open Windows Settings.
  • Click on Apps and open Installed Apps.
  • Click on Microsoft Office Professional Plus and select Modify.
  • Choose the Quick Repair option.
  • Restart Outlook and Verify.

5. Repair Corrupted PST File

If none of the above methods have worked so far, there is a good chance that your PST file is corrupted. There are two ways to go about this.

  1. Use Scanpst to fix the Not Implemented Error in Outlook.
  2. Use Remo PST Repair to fix the Not Implemented Error in Outlook.

1. Use Scanpst to fix the Not Implemented Error in Outlook.

ScanPST is an inbuilt PST repair tool that you can use to repair PST files with mild to medium levels of corruption by following the given steps.

  • Open ScanPST.
  • Import your PST file using the Browse option.
  • Click on Start to begin the scanning process.
  • Click on Repair to begin the Repair process.

2. Use Remo PST Repair to fix the Not Implemented Error in Outlook.

Suppose you still haven't resolved your issues. In that case, your PST file may be severely corrupted, and you will need a professional tool such as Remo PST Repair that uses specialized technology to repair corrupted Outlook files.


As this article comes to a close, the “Not Implemented” error is a reasonably common hurdle that can be overcome using standard troubleshooting methods. If Those do not work, there might be underlying issues, and you may need specialized repair tools to rectify them.

About the Author: Tony Landry

Tony Landry is a Web Content Editor at Remo Software. He loves to write, edit, and manage content for users trying to troubleshoot and fix problems on Windows, Outlook, storage drives, and Cloud storage networks. With an aptitude that transcends writing, Tony is recognized as a Microsoft Outlook, Word, and PowerPoint expert. His comprehensive solutions…