'Not Implemented' Error message on Send/Receive

%3CLINGO-SUB%20id%3D%22lingo-sub-2759846%22%20slang%3D%22en-US%22%3E'Not%20Implemented'%20Error%20message%20on%20Send%2FReceive%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2759846%22%20slang%3D%22en-US%22%3E%3CP%3EOutlook%20Version%202018%20(Build%2014326.20348)%3C%2FP%3E%3CP%3EWin%2010%20version%2021H1%20(Build%2019043.1165)%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EOutlook%20has%20stopped%20updating%20email%26nbsp%3B%20and%20shows%20the%20'Not%20Implemented'%20Error%20when%20I%20click%20on%20'send%20%2F%20receive%20all%20folders%20'and%20I%20get%20the%20following%20error%20if%20I%20try%20and%20add%20a%20new%20profile%200x80040154.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EI%20have%20run%20the%20repair%20wizard%20and%20deleted%20and%20reinstalled%20the%20Office%20apps%20without%20any%20success.%20The%20PC%20was%20rebuilt%204%20weeks%20ago%2C%20because%20I%20had%20exactly%20the%20same%20issue%20with%20the%20previous%20build%20and%20I%20couldn't%20resolve%20it.%20Following%20the%20rebuild%20everything%20worked%20OK%20and%20Gmail%20email%20was%20getting%20synched%20without%20any%20issues%20-%20until%20now.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EI%20have%20previously%20followed%20steps%20on%20other%20threads%20that%20try%20to%20deal%20with%20the%20'Not%20Implemented'%26nbsp%3B%20issue%2C%20but%20nothing%20works.%20I've%20tried%20deleting%20all%20profiles%2C%20but%20when%20I%20restart%20Outlook%20and%20get%20prompted%20to%20create%20a%20new%20profile%20I%20get%20the%200x80040154%20error.%20The%20profile%20name%20does%20get%20registered%20(Profile%20name%20appears%20in%20Control%20Panel%3AMail%3AProfiles%20list%20)%2C%20despite%20the%20error%20and%20Outlook%20does%20open%2C%20but%20if%20I%20then%20try%20and%20add%20an%20email%20account%2C%20within%20Outlook%26nbsp%3B%20I%20get%20the%20'Not%20Implemented'%20error.%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3ECan%20anyone%20advise%20as%20to%20what%20is%20going%20on%20to%20cause%20this%20repeated%20corruption%20and%20how%20do%20I%20fix%20it%3F%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E
Established Member

Outlook Version 2018 (Build 14326.20348)

Win 10 version 21H1 (Build 19043.1165)

 

Outlook has stopped updating email  and shows the 'Not Implemented' Error when I click on 'send / receive all folders 'and I get the following error if I try and add a new profile 0x80040154.

 

I have run the repair wizard and deleted and reinstalled the Office apps without any success. The PC was rebuilt 4 weeks ago, because I had exactly the same issue with the previous build and I couldn't resolve it. Following the rebuild everything worked OK and Gmail email was getting synched without any issues - until now.

 

I have previously followed steps on other threads that try to deal with the 'Not Implemented'  issue, but nothing works. I've tried deleting all profiles, but when I restart Outlook and get prompted to create a new profile I get the 0x80040154 error. The profile name does get registered (Profile name appears in Control Panel:Mail:Profiles list ), despite the error and Outlook does open, but if I then try and add an email account, within Outlook  I get the 'Not Implemented' error. 

 

Can anyone advise as to what is going on to cause this repeated corruption and how do I fix it?

 

 

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