Outlook Connection Issues

Not open for further replies.


Outlook version
Email Account
Good Morning All,

We are having connection issues with Outlook 2010. We are running Windows 7 Professional 64-Bit on all computers and running Microsoft Security Essentials, the issue occurs at random times throughout the day for every user (total of 8 users), but rarely are multiple users facing the issues at the same time, so when one or 2 users can't connect everyone else can. Everything will be working fine and then all of a sudden, the send/receive error pops up and says cannot connect to server. Our mail service is hosted and I have checked with them and they have verified that if it was their issue then all the users would experience the same issue at the same time. They also have a webmail service that when I cannot connect through outlook, I can try that to check account connection, I can always connect through the webmail even if outlook says errors. I also contacted the ISP and they verified that it is nothing on their ends all of the ports we are using are wide open.

My question is what can I try to avoid the connection errors, I have tried turning off the anti-virus and Windows firewall? They said that is isn't the router because all users would have same issue at same time. It is definitely a computer based issue any ideas that I can try?



Diane Poremsky

Senior Member
Outlook version
Outlook 2016 32 bit
Email Account
Office 365 Exchange
It sounds like there is a block of some sort based on number of connections - that's why it works for some but not all. Low bandwidth could cause it too, but i think it would need to be pretty slow. On the other hand, Outlook is pretty talkative and the mail provider could be limiting the number of connections per IP address - I'm assuming you all use the same IP?

Does it reconnect on it's own later or go into a hung state?


Outlook version
Email Account
Thanks for the reply, it does connect after awhile, normally it requires the user to force the send/receive process. Yes we all use the same IP. Is there anyway to trace the connection and look for errors or a log that reports more than the "Unable to Connect to Server" error.

Diane Poremsky

Senior Member
Outlook version
Outlook 2016 32 bit
Email Account
Office 365 Exchange
You can turn on logging in Outlook and see if what it reports as the problem -

Outlook 2007:

Tools menu, click Options.

On the Other tab, click Advanced Options.

Select the Enable logging (troubleshooting) check box, and then click OK and return to outlook.

Log files will be in %temp%\Outlook (type or paste that in the address bar of windows explorer then press enter)

The difficult part is you'll need to enable it for everyone until someone has problems. One logged incident should be enough - disable logging on all of the computers and open the log from the problem computer in notepad and see what clues it holds.
Not open for further replies.
Similar threads
Thread starter Title Forum Replies Date
J Office 365 and Outlook connection issues Using Outlook.com accounts in Outlook 3
S Outlook connector, numerous versions, connection issues Using Outlook.com accounts in Outlook 1
glnz How to retrieve or redo Verizon.net email password without affecting Outlook connection? Using Outlook 1
D Outlook 2016 IMAP Connection Returns All Email but outlook.com does NOT Using Outlook.com accounts in Outlook 2
O Outlook 2016 0x800CCC0F 'The connection to the server was interrupted' Using Outlook.com accounts in Outlook 1
M Outlook Email Connection Error Using Outlook 3
K Work Email - Calander Connection to Outlook.com Using Outlook 2
R The action cannot be completed. The connection to Microsoft Exchange is unavailable. outlook must be Using Outlook 1
A Exchange 2003 Outlook 2010 64 Bit- AutoDiscover Connection Err - Certificate Exchange Server Administration 9
M connection to the microsoft exchange server has been lost. outlook 2007 Exchange Server Administration 0
0 Outlook 2010 causes computer to lose connection when opening and Send/Receive Using Outlook.com accounts in Outlook 14
T Outlook keep loosing connection to the exchange server Using Outlook 1
M Outlook 2007 "Connection Status..." shows 3 "Disconnected" entries of type "Directory" Using Outlook 18
V Outlook 2021 Can anyone explain why my Outlook views keep changing?! Using Outlook 2
AlphonseG Outlook 365 Outlook Crashes on setting SaveSentMessageFolder Outlook VBA and Custom Forms 1
S Outlook 2021 How to customize colors Outlook 2021 & Office 2021 on PC Using Outlook 0
D Outlook 2007 Recovering E-Mails Using Outlook 0
G Stop Outlook 365 adding meetings to calendar Using Outlook 0
HarvMan Using Emojis in Outlook 365 Using Outlook 3
T Outlook 2019 Not Using Auto Compete After Deletion of 365 Using Outlook 1
D Gmail mail is being delivered to a different email inbox in Outlook App 2021 Using Outlook 2
Albert McCann Outlook 2021 Outlook Display of HTML Email from two senders is glitchy Using Outlook 0
richardwing Outlook 365 VBA to access "Other Actions" menu for incoming emails in outlook Outlook VBA and Custom Forms 0
J Unable to delete folders in Outlook 2019 / Windows Using Outlook 1
K Outlook for Mac problems Using Outlook 0
D Outlook app 2021 & iCloud PST issues Using Outlook 2
M c# vsto Outlook.ApplicationEvents_11_NewMailEx Outlook VBA and Custom Forms 1
J Event/Meeting in Outlook Does Not Align with SharePoint Calendar Using Outlook 5
Christopher M Is it me, or is Outlook 365 BUGGY? Using Outlook 3
U Outlook on the iPhone cannot approve filtered Emails Using Outlook 0
J GoDaddy migrated to Office365 - Outlook Wont Add Account Exchange Server Administration 21
K Outlook 365 After migrating to Outlook 365, some contacts display in emails with prefixes Using Outlook 1
J Outlook Rules VBA Run a Script - Multiple Rules Outlook VBA and Custom Forms 0
Horsepower Cannot delete gmail in iPhone Outlook outbox Using Outlook 1
F Outlook 2019 Outlook 2019 Add and Sync to New computer Comcast server Using Outlook 2
M Understanding Outlook Identities Using Outlook 1
kburrows Outlook or Phone Combining Contacts? Using Outlook 0
P Outlook 2013 search no longer works Using Outlook 2
M Accessing ALL Outlook contact fields Outlook VBA and Custom Forms 3
C Outlook (desktop app for Microsoft365) restarts every time I save my VBA? Using Outlook 0
R MailTips and older Outlook versions Using Outlook 0
A iCloud Outlook Add In is causing Outlook 2021 to crash and got disabled Using Outlook 4
C How to import Outlook calendar? Using Outlook 1
HarvMan Outlook 365 loses "outlook.com" exchange server settings Using Outlook 1
HarvMan Outlook.com Account Using Outlook 3
D Office 365 Outlook desktop app prompts for all account passwords on startup Using Outlook 6
D Alerts in outlook Using Outlook 1
richardwing Auto forward email that is moves into a specific outlook folder Outlook VBA and Custom Forms 5
L Recommendations for Utility to Backup Outlook 365 Account Settings Using Outlook 2
J Recommendations for Outlook Duplicate Email Remover Using Outlook 6

Similar threads