How to Fix Not Implemented Error in Outlook? Here’s How

  

Mark Regan
Published: July 30th, 2025 • 6 Min Read

Every click on Send/Receive in Outlook appears Not Implemented Error in Outlook? If yes, then this guide will solve all related errors. But before going to the solution let’s know what the error means.
This error usually pops up when Outlook can’t complete a task it’s supposed to do like sending an email, receiving new messages, or opening a new email window.

Let’s Know the Mean of Not Implemented

• A messed-up setting
• A broken email profile
• A faulty add-in(those little tools that extend Outlook?

Not Implemented Error mostly appears in Outlook 2010, 2013, 2016, 2019 and latest Microsoft 365 version.

Causes of Not Implemented Error in Outlook

1. Outlook uses a small file called SRS to save your send/receive settings. If this file gets damaged or corrupted, Outlook can’t perform basic actions like Sending or Receiving emails which may lead to Not Implemented Error in Outlook.
2. Add-ins create extra features in Outlook. Sometimes it does not work correctly, especially after an update. The same goes for an overprotective antivirus program which can block normal Outlook functions by mistake.
3. Your Outlook profile holds all your settings and email accounts. If it gets corrupted(and this mostly happens) Outlook might stop working properly including showing errors like your account forgot who you are.
4. Outlook stores your emails, contacts, calendars in a PST file. If this file gets damaged, Outlook can act normally and also Get Not Implement Error in Outlook.
5. The Windows Registry Editor where all programs save including Outlook. Sometimes, Outlook especially after update or permission changes, Outlook loses access to something it needs(like Security Manager registry key). When it can’t read or write to this key, features stop working.
6. If you have installed multiple versions of Microsoft Office or Outlook over time(like 2016 and 2019) they can start to clash with each other. You might also run into licensing token issues especially with Microsoft 365 or volume license editions.

How to Fix Not Implemented Error in Outlook?

Now we know the causes of Implemented error in Outlook, so, let’s forward to know the solutions to fix it. Try these manual methods to restore Outlook functionality.

Method 1. Disable Antivirus Temporarily

1. Press Win+R and search your Antivirus name.
2. Right-click and look for an option like Disable Protection or Pause Protection.
3. Relaunch Outlook and test error.
   

Method 2. Launch Outlook in Safe Mode & Disable COM Add‑Ins

1. Press Win+R and type: Outlook.exe/safe and press Enter.
   
2. If Outlook functions normally then click on file and press on options.
   
3. Select Add-ins and press on Go.
   
4. Disable faulty Add-ins.
   

Method 3. Recreate the Send/Receive (SRS) File

1. Close Outlook completely.
2. Press Win+R and type:%appdata%\Microsoft\Outlook and hit Enter.
3. Find Outlook.srs file and rename it.
4. Relaunch Outlook to recreate an SRS file.

Method 4. Create a New Outlook Profile

1. Close Outlook and open the Control Panel.
   
2. Tap on Mail(Microsoft Outlook) and hit on Show Profiles.
   
3. Click on Add and then give it a name and press your email again.
   
4. Choose Always use this profile and select the new one.
5. Open Microsoft Outlook with a new profile.

Method 5. Repair Outlook or Office Installation (Quick Repair, Online Repair, SaRA)

1. Open the Control Panel and click on Programs and features.
   
2. Find Microsoft Office and right-click on it and choose Change.
3. Select Quick Repair or Online repair.

Method 6. Adjust Registry Permissions for SecurityManager Key

1. Tap on Win+R and type Regedit then press Enter.
   
2. Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SecurityManager.
   
3. Right-click on Security Manager and tap on Permissions.
4. Make sure your user has full control and read access.
5. Close Registry Editor and relaunch Outlook.

Method 7. Use Outlook Inbox Repair

1. Navigate to: C:\Program Files\Microsoft Office\root\Office16\ScanPST.exe.
2. Click on the browse icon and select Outlook files as you want to repair.
   
3. Check on Make copy of scanned files and press on Repair.
   

What Makes This Tool Stand Out?

• This software also helps you to restore Outlook contacts from backup.
• You can also repair specific mailbox folders as needed.
• With this wizard, you can also take advantage of a simple interface to easily operate by any professional or beginner users.
• It also supports dual mode to select multiple Outlook files or whole folders of Outlook files.
• With this wizard, users can easily repair batch Outlook files at once without facing any limitations.

Preventing the Not Implemented Error in Outlook

• Keep updated Outlook and Windows to fix bugs, get faster performance and prevent errors like Not Implemented Error in Outlook.
• Running more than one version of Microsoft Office(like Office 2016 and 2019) can confuse Outlook and lead to conflicts. Stick to just one clean version for best results.
• Overtime, your Outlook profile or send/receive settings(SRS file) can get corrupted. Recreating them every few months is a simple way to keep Outlook running smoothly and error free.

Final Thoughts

Let’s wrap this guide as we have shared all essential information to fix Not Implemented Error in Outlook. We have shared 8 methods including manual and Alternative solutions. But a manual approach has no guarantee to meet your expectations. So, we recommend you to choose an alternative approach to get results faster and accurately as users expect.