Fix: Outlook Unknown Error 0x800cce05

Kamil AnwarUpdated on June 23, 2023
Kamil is a certified Systems Analyst

The error 0x800cce05 is associated with Outlook. This error states, ‘Task ‘Hotmail – Sending’ reported error (0x800cce05): ‘Unknown Error 0x800cce05.’ A majority of people have problems with sending and receiving emails using Outlook.

Specifically, this error doesn’t allow users to send emails. Although users can receive emails, they are unable to send them to others. This issue obstructs users, as it also occurs within Windows 10, which is the latest OS build from Microsoft. Reinstalling the connector and deleting the Outlook account doesn’t work in this case.

Outlook is one of the most widely used email handling software developed by Microsoft. It is a stand-alone package with a calendar, contact manager, task manager, and more, reducing the need to go back and forth between sending and viewing emails, managing meetings, and handling tasks to be performed. Therefore, it is essential to fix errors for users who rely on it.

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Reason behind the error 0x800CCE05:

This error can be caused by corrupted system files that create conflicts with some software programs like Outlook. Internet security software installed on the PC can also be the culprit behind this error.

Solutions to Fix Error 0x800cce05

A number of solutions can be performed to get rid of this annoying error message. Follow the methods below to accomplish this.

Method #1: Running a System File Checker Scan (SFC Scan).

The most authentic solution to restore email sending functionality in your Outlook is to run a System File Checker Scan to allow it to find and fix the issue. Follow the steps below to run an SFC Scan on your computer.

1. Open the Command Prompt (Admin) by pressing the Win + X keys on the keyboard and selecting Command Prompt (Admin) from the list.

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2. Inside the Command Prompt, type ‘sfc /scannow‘ and hit the Enter key to execute the command. It will start scanning and verifying the system for corrupted files, and it will also fix them automatically. Please be patient, as it might take up to 15 minutes to find and fix the problem. After the process is complete, test your Outlook by sending an email.

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Method #2: Fixing Internet Security Software

Internet security software can also cause this issue by blocking calendar and other services of Outlook. As a result, Outlook’s operations are disturbed. In this case, you should allow the calendar or other Outlook services blocked by internet security software in order to fix the sending email issue. If you don’t know how to allow them, then resetting or uninstalling and reinstalling could reset the rules. If it works after uninstalling, then you can install a different antivirus, such as AVG Free.

The most common antivirus known to cause this is Avast!”.

Kamil AnwarUpdated on June 23, 2023
Kamil is a certified Systems Analyst
ABOUT THE AUTHOR
Photo of Kamil Anwar

Kamil Anwar


Kamil is a certified MCITP, CCNA (W), CCNA (S) and a former British Computer Society Member with over 9 years of experience Configuring, Deploying and Managing Switches, Firewalls and Domain Controllers also an old-school still active on FreeNode.

Comments

39
    AN
    Ant Nov 8, 2015

    Thank you. This fixed my email problem

    Reply
    AW
    Adam Williams Nov 12, 2015

    Did have corrupt stuff. Seemed to work for me but my techie pal swears it was just me removing and re-adding the profile…. the mystery continues. Fixed though, thanks. 😀

    Reply
    VI
    vinayakrb Nov 12, 2015

    Yes your solution worked for me. Thanks so much.

    Reply
    GU
    Guest Nov 18, 2015

    Solved my problem. Thank you!

    Reply
    GU
    Guest Nov 18, 2015

    Thank you very much. This fixed my problem where Outlook couldn’t send emais through my linked Gmail account. I also had to change the Outgoing SMPT server to SSL port 465. Everything is synced now and I can send email again.

    Reply
      KA
      K. Arrows Author Nov 18, 2015

      Welcome.

      Reply
    SE
    SeptimusFry Nov 18, 2015

    Unfortunately, sfc /scannow did not work for me. I had to delete the Outlook.com account and add it again. It helps to stop and start Outlook when trying fixes of any sort. I also read your suggestion about the anti-virus and I just turned mine off to see if it was interfering (it wasn’t).
    Thanks for your offered fix, the fact that my problem was something diffrent did not invalidate your fix, I only make the comments above in case it might help someone else.

    Reply
      KA
      K. Arrows Author Nov 18, 2015

      I appreciate your comments. Try creating a new outlook profile from Control Panel -> Mail

      Reply
    DJ
    Dick Jones Nov 19, 2015

    Hi,

    One important point – everything seemed to be going to plan – SFC found corrupt files and fixed them BUT the error persisted !

    I then saw another comment on the internet that mentioned you should RESTART THE PC after running SFC.

    I did this and everything was fine

    Many thanks

    Reply
    IN
    Ingrid Nov 24, 2015

    This worked for me. Thank you!

    Reply
    PA
    PaulC Nov 25, 2015

    Thanks. sfc /scannow worked for me. I had the same error with Outlook 2016 on Windows 10 accessing my emails on iinet.

    Reply
      KA
      K. Arrows Author Nov 25, 2015

      Welcome.

      Reply
    JB
    Jack B Nov 29, 2015

    Kevin, thank you very much for the solution to the outlook problem. Spent hours on a live chat with microsoft last night and they told me the problem was with my ISP which didnt make sense as my laptop was sending ok.
    Many thanks again.

    Reply
      KA
      K. Arrows Author Nov 29, 2015

      Welcome.

      Reply
    GA
    Gary Nov 30, 2015

    Thanks very much Kevin, worked without a problem!

    Reply
    DA
    dave Dec 4, 2015

    Tried the scannow. It found errors but couldn’t fix them. Still have the send error on outlook, but web based email works fine as before.

    Reply
      KA
      K. Arrows Author Dec 4, 2015

      Create a new profile, and re-configure account. If it works, export the PST for the old account (if it’s pop) and messages are not saved, else configure it as IMAP account.

      Reply
    DA
    David Dec 11, 2015

    A sincere and humble thank you for this solution which worked a treat from me. Very much appreciated.

    Reply
    AD
    AdamJ Dec 30, 2015

    I just installed outlook on new laptop and had installed Avast free version beforehand. I ran the command prompt but this didnt work… As soon as I uninstalled Avast it worked. Big Thanks!

    Reply
    LS
    Louis Schwendener Jan 1, 2016

    wow idid the sfc /scannow, it worked, thanks a lot, can finally send emails again.

    Reply
    LS
    Louis Schwendener Jan 1, 2016

    wow idid the sfc /scannow, it worked, thanks a lot, can finally send emails again.

    Reply
    CR
    Colm R Jan 6, 2016

    Brilliant – thank you. This worked perfectly once I restarted Outlook after the scan.

    Reply
      KA
      K. Arrows Author Jan 6, 2016

      Welcome.

      Reply
    GE
    George Jan 13, 2016

    Worked perfectly, thank you!

    Reply
    VA
    Vatche Jan 22, 2016

    This worked for me too Kevin. We need people like you to get us out of trouble. Cheers mate!

    Reply
    TR
    Troy Jan 25, 2016

    Thanks for sharing the fix. Much appreciated.

    Reply
    DA
    David Jan 31, 2016

    I’ve looked everywhere for a solution. All the others talk about checking the settings. This is the only thread to mention sfc – and it worked! Many thanks.

    Reply
    SA
    sayir Feb 9, 2016

    Thanks dear…its fixed my issue office 2016

    Reply
    RO
    RoseyIbaz Feb 22, 2016

    Thanks a lot….i just resolved an issue with outlook2016 using the sfc scan.

    Reply
    SW
    Steve Ward Feb 29, 2016

    Unbelievable, I buy a windows 10 system with a windows office package inc outlook. I get no support AT ALL from MS or my e mail outlet, your simple instruction sorts in 15 mins, many thanks and what a statement about MS.
    Thanks again Steve Ward

    Reply
    LE
    Livia Ena Mar 11, 2016

    life-saver !!! Many Thanks

    Reply
    LO
    Lorraine Mar 28, 2016

    I had this problem with a new laptop running Windows 10 and Outlook. McAfee was also running as a freebie with the computer. I uninstalled McAfee to eliminate it from the equation as it can sometimes be a problem. I then had to log on to Windows 10 as an administrator using the following method:
    Click on the Windows icon (bottom left of screen)
    Click on ‘All apps’
    From the list scroll down until you see Windows System then click on it
    From the list under Windows system, RIGHT click on Command Prompt
    From the list, click on Run as administrator

    A user account control window pops up asking
    ‘Do you want to allow this app to make changes to your PC’
    Click on ‘Yes’

    A black screen appears with the following prompt:
    C:Windows/system32>

    Type the following command
    sfc/scannow

    It should look like this

    C:Windows/system32>sfc/scannow
    Press Enter.

    The Scan program should run, although mine said another program was running and to try later, but after a couple of attempts it did run. It counts up to 100% slowly as it checks files. At the end it tells you if it found and fixed errors. Mine had. Close the window (with the x in the top right hand corner. )

    Open Outlook and send a message. I sent one to someone in my address book and said it was a test and could they reply but I also included my own email address in the Cc… Box
    Send the email…. Mine sent fine and after a few seconds my email from myself came through. Success! I hope you have success too. Good luck

    Reply
    KI
    Kit Mar 30, 2016

    Thank you! I had exactly the same problem as Lorraine and, after days of struggling, Fix 1 worked. You have saved my sanity. I have free McAfee running too but I didn’t need to uninstall it.

    Reply
    BM
    Bestin Manuel Apr 28, 2016

    Thanks a lot. It worked

    Reply
    SM
    Sarah Murphy May 23, 2016

    Thank you, thank you, thank you. I’ve been trying for ages to fix this. A brand new laptop with Windows 10 and Outlook 2016 pre installed really shouldn’t have this issue. Scannow found errors and fixed them. You’re a star!

    Reply
      KA
      K. Arrows Author May 23, 2016

      welcome

      Reply
    MI
    Misi Jul 25, 2016

    Thanks a lot 🙂
    Method2 was a perfect solution.

    Reply
    MR
    Muhammad Nadeem Rana May 29, 2017

    Thanks
    Method 2 is Perfect for me Great Solution

    Reply
    CT
    Cathie Tufnail May 24, 2018

    Thank you so much for this post. I ran the sfc /scannow and turned out I had corrupt files. Have spent AGES sorting out my laptop after latest windows 10 update put it in intensive care. It’s not making a slow recovery after installing from disc and starting all over again! Once again, thanks!!

    Reply