If when you go on to Send/Receive, Reply, Reply All or Forward an email in Microsoft Outlook on your Windows 10/8/7 computer, you receive a Not Implemented error box, then here are a few things you should look at.
Not Implemented error in Outlook
1] If you receive this error, the first thing you want to do is repair or reinstall your Microsoft Office installation. Office 2016 on Windows 10 does not allow you to uninstall individual components, and so you need to carry out either a Quick Repair or an Online Repair. Users of earlier Office versions can uninstall, reinstall or repair individual Office programs.
2] Start Outlook in Safe Mode. To do this, open the Rin box, type outlook /safe, and hit Enter. If it runs fine, you may want to check the installed add-ins. Disable some Outlook add-ins and see if that helps you.
Click File menu > Options > Add-ins > Go button besides Manage: Com-in Add.
Try to identify the offending add-on and disable it. Restart Outlook and try.
3] Reset the Outlook srs file. This file contains the settings that you set using via the CTRL+ALT+S Send/Receive Groups settings. To do this, close Outlook and navigate to the following folder:
Delete the Outlook.srs file that you see. When Outlook restarts, the file will be automatically re-created.
4] Create a new Outlook Profile and check if it helps.
5] The following posts give additional ideas:
- Outlook Send/Receive error 0x800CCC13
- Troubleshoot Microsoft Outlook problems like freezing, corrupt PST, Profile, Add-in
- Microsoft Outlook stuck on Loading Profile
- Outlook is not responding, has stopped working, freezes or hangs.
Hope something helps!