Information Technology - Information Security

Unable to send and receive email from Outlook application.

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If you see Disconnected, Working Offline, or Trying to connect…, Outlook can't reach the email server to send your mail.

Choose Send/Receive > Preferences > Work Offline to toggle between offline mode and online mode. You may need to open the message and send it again or choose Send/Receive.

If you lose your connection to the internet, Outlook won't be able to send your messages.

• Open a browser, such as Internet Explorer, Edge, or Chrome.
• Try entering one of the following websites in the address bar:
  1. http://www.microsoft.com
  2. http://www.google.com
• If you can't reach either of those two websites, check your network connectivity.

• Dose your messages contain large attachments?

• Some email providers (such as your ISP or even Gmail) won't let you send messages larger than a certain size. Adding pictures and large attachments to your message can prevent you from sending that message (and any messages sent after the large message).
• Go to your Outbox and then open the stuck email messages. Start with the oldest message first. If that message has an attachment that’s larger than 5MB, delete the attachment and either attach a smaller file or attach a link to the attachment. See Attach a file to an email in Outlook for more information on attachments.
• Now try to send the message again.

• Have you changed your password recently? 

• Go to start--settings—Access work or school- work or school account—click on info tab.

• Check your Mailbox is full?

• On Outlook click on File tab- you will get mailbox setting option

• Start outlook in safe mode

• Sometimes, one of Outlook's add-ins will crash and prevent your email messages from sending. To disable all add-ins, you can start Outlook in safe mode. If you can send email while Outlook is in safe mode, creating a new Outlook email profile should allow you to send email again.
• To start Outlook in safe mode, click the Windows key. In the search box, type outlook.exe /safe and press Enter.

Unable to send and receive email from OWA (Web Browser).

If you lose your connection to the internet, Outlook won't be able to send your messages.

• Open a browser, such as Internet Explorer, Edge, or Chrome.
• Try entering one of the following websites in the address bar:
  1. http://www.microsoft.com
  2. http://www.google.com
• If you can't reach either of those two websites, check your network connectivity.
• Clear your Browser cache, close browser & relaunch again.

• Dose your messages contain large attachments?
• Some email providers (such as your ISP or even Gmail) won't let you send messages larger than a certain size. Adding pictures and large attachments to your message can prevent you from sending that message (and any messages sent after the large message).
• Go to your Outbox and then open the stuck email messages. Start with the oldest message first. If that message has an attachment that’s larger than 5MB, delete the attachment and either attach a smaller file or attach a link to the attachment. See Attach a file to an email in Outlook for more information on attachments.
• Now try to send the message again.

• Check your Mailbox is full?
• At the top of the page, select Settings  > View all Outlook settings.
• Select General > Storage.