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Kudos0

Outlook (office 365)

Does anyone know what the error code 0x800cc0f is when I start Outlook. Some websites state that it could be my Norton Security Premium.

I would appreciate a reply.

Respostas

Kudos0

Re: Outlook (office 365)

Was Outlook working correctly and then suddenly started giving this error? 

What operating system and version are you using?

Some search results I found noted it could be configuration problems with some Windows files.  You might try running a check on your Windows installation. Click on Start and type CMD in the search box. Right click on cmd.exe and click on Run as Administrator. Type 'sfc /scannow' without the quotes. This will check your Windows installation and try to correct any errors it finds.
 

Things happen. Export/Backup your Norton Password Manager data.
Kudos0

Re: Outlook (office 365)

I just ran sfc /scannow and the results show no issues.

I'm running Win. 10 Version 1809, installed 10/03/2018.  I Always keep my OS up to date.

Background: about 3-4 weeks ago I noticed, after emails finished loading, an error message would appear at the bottom of the outlook screen. I called Spectrum Tech. support. (No Help) They, as always blame Microsoft/Outlook.  Spoke to Outlook tech support.  They checked my Outlook (remotely) and said that my Office 365 was working correctly. I have searched the internet for answers on this error code. I've tried some, no answers. One site noted that my anti-virus software could be the issue. I've had Norton for many years and I've never had this issue before. By now I've come to the point where as long as I keep getting my email I'll live with this problem until someone can point to an exact fix.

Thanks for your support. I'll look forward to any other suggestions.

Kudos0

Re: Outlook (office 365)

Hello KC. Reset your Norton firewall in settings. Give the system a reboot and see if this persists. Microsoft has an article on the error you are seeing here.

You may as a last resort want to perform a R&R of your product and do a REMOVE ONLY. Then reboot. Once done log into your Norton account and download your product again from there. Once the initial install and first check for updates are done, reboot a second time. After which run live update again to check for further updates. Recheck for your issue persisting again. Let us know if the firewall reset did the trick or if you decided on the R&R.

Cheers

"From DOS to Windows10 what a journey it has been" / MS Certified Professional / Windows Server 2016 Essentials / Windows 10 Professional x 64 version 1903 / build 18362.418 / N360 Deluxe 22.19.8.65 / Norton Core v.282 on Android 2.11 / Opera GX
Kudos0

Re: Outlook (office 365)

kc135:

Does anyone know what the error code 0x800cc0f is when I start Outlook. Some websites state that it could be my Norton Security Premium.

Hi kc135:

See the troubleshooting guide in the MS support article Error occurs when you send or receive an email message in Outlook or Outlook Express, which states:

Task '<server name> - Sending and Receiving' reported error (0x800ccc0f): 'The connection to the server was interrupted. If this problem continues, contact the server administrator or Internet service provider (ISP).

I was experiencing frequent 0x800CCC0F connection errors a few years ago in my Windows Mail client when I received incoming e-mails from my ISP (Shaw Communications) mail server, and discovered these connection errors were drastically reduced if I did either of the following:

  • Switching the ports in my Shaw ISP e-mail account from their standard TCP ports [Port 25 for SMTP (outgoing) and Port 110 for POP3 (incoming)] to their secure SSL/TLS servers [Port 587 for SMTP-S and Port 995 for POP3-S]. (Note: Contact your ISP for the specific port numbers they use for secure SSL/TLS e-mail).
  • Disabling Norton AntiSpam (Settings |  AntiSpam | Filter | Norton AntiSpam | OFF).

Please see my comments in the 2016 thread Norton Security Causing High CPU Usage about Norton e-mail scanning (Settings | Antivirus | Scans and Risks | Email Antivirus Scan).  As I noted there, the Norton support article Email Antivirus Scan states "This feature does not work if your SMTP or POP3 email port is an SSL-encrypted email port. Norton supports all email programs that use non-SSL POP3 and SMTP communication protocols." I don't know if it's because I have a relatively slow Internet connection, but for some reason the connection to my ISP mail server could also time out while it was waiting for Norton to scan my incoming e-mails for viruses and other threats via the standard Port 110 for POP.

I have an old Vista SP2 computer, and support article Configure Client Integration notes that Norton AntiSpam can no longer be integrated with mail clients like Thunderbird, Win XP Outlook Express or my own Vista Windows Mail , so I've always been puzzled why Norton AntiSpam causes problems with my incoming e-mails when I use the standard 25/110 TCP ports.  You might want to read that support article and then go to Settings | AntiSpam | Client Integration (AntiSpam must be enabled to access Client Integration) to see how your cloud-based Office 365 Outlook client is currently configured for AntiSpam.

If none of this helps, simply increasing the Server Timeout period for the problem mail server (my image above shows my connection timeout is set to 1 minute for my Shaw mail server) or rebooting your router to reset the connection to your ISP when it starts acting glitchy (unplug from power, wait for 30 sec, and plug back in as instructed at How to Properly Restart a Router & Modem) might solve the problem.
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32-bit Vista Home Premium SP2 * Firefox ESR v52.9.0 * Norton Security v22.15.1.8 * Windows Mail

Kudos0

Re: Outlook (office 365)

lmacri:

Please see my comments in the 2016 thread Norton Security Causing High CPU Usage about Norton e-mail scanning (Settings | Antivirus | Scans and Risks | Email Antivirus Scan).  As I noted there, the Norton support article Email Antivirus Scan states "This feature does not work if your SMTP or POP3 email port is an SSL-encrypted email port....

Hi kc135:

...and further to my previous post, if you want test the effect of switching to your mail server's secure TLS/SSL ports, this should only prevent your Norton Email Antivirus Scan from checking for threats before they land in your Inbox. If you receive a malicious e-mail your Norton AutoProtect real-time protection should still detect the threat after it lands in your Inbox and/or as soon as you open a malicious attachment and it tries to execute.

I also have my Microsoft Live (Outlook.com) account configured to use secure TLS/SSL connections (Port 587 for outgoing SMTP-S / Port 995 for incoming POP3-S) for my <username>@live.ca e-mail address, and I received a malicious e-mail in July 2014 that had an infected attachment (Trojan.Klovbot, a.k.a. Sophos).   I did not click on the attachment but NIS v. 20.x was still able to detect and quarantine the infected attachment as soon as it arrived in my Inbox.  According to my NIS security history the infected file was detected by the Email Scanner, which suggests that there must still be some form of e-mail scanning after messages arrive in my Inbox when I use secure TLS/SSL connections.  A malware removal specialist at Malwarebytes did a thorough check of my system and they confirmed that there were no traces of this Trojan.Klovbot infection left behind on my system after the e-mail attachment was quarantined by Norton.

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32-bit Vista Home Premium SP2 * Firefox ESR v52.9.0 * Norton Security v22.15.1.8 * Windows Mail

Kudos0

Re: Outlook (office 365)

First I want to apologize for not responding sooner.  Health issues. (Bad Cold)

I did what you recommended, I reset the Norton Firewall.  But first I have this question. When I clicked on it to reset the firewall, I didn't see anything happen. Was I suppose to??

Second: when I go to Programs and Features and click on Norton I see two options. 1. to completely remove it and (2) uninstall but keep my settings.  Do I select keep my settings then follow your original directions?

I'm not a "Geek" so unless I read a step by step procedure, then I'm not going to do it. You mentioned, log onto the Norton account and download your product.  I "Assume" you mean go to Norton.com and log in, correct.

Thanks for your help.

Kudos0

Re: Outlook (office 365)

kc135, Resetting the norton firewall won't give you a prompt or notification so it should be reset. Also the entire process to perform a clean removal is here step by step. Make sure to perform a removal only and reboot your system.  And yes log into Norton . com (your Norton account) and get your product directly from there.

Cheers

"From DOS to Windows10 what a journey it has been" / MS Certified Professional / Windows Server 2016 Essentials / Windows 10 Professional x 64 version 1903 / build 18362.418 / N360 Deluxe 22.19.8.65 / Norton Core v.282 on Android 2.11 / Opera GX

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