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Exchange Connection Problems

How to Fix Outlook Keeps Saying It Is Contacting the Server

Maira MehtabMaira Mehtab Sep 22, 2026 869 views

Question details

The user experiences a delay of about 30 seconds when opening certain emails in Outlook, accompanied by a server-contacting message, even for recently viewed messages.

Product
Microsoft Outlook
Device & OS
not provided
Scenario
Opening specific emails in the Outlook client.
Observed behavior
A 'contacting the server' message appears and delays the opening of the email for approximately 30 seconds.
Before you start

Ensure you have a stable internet connection and take note of which specific emails trigger the delay, as this issue is often related to external images or linked content attempting to load within those messages.

Solution 1Recommended

Verify the Issue on Outlook on the Web

Determine if the loading delay is isolated to the desktop client by checking the exact same emails via a web browser.

Testing your emails in the web version of Outlook helps isolate the problem. If the emails open instantly on the web, the issue stems from your local desktop Outlook configuration, cache, or add-ins.

1
Log in to Webmail

Open your preferred web browser and log in to Outlook on the web (OWA).

2
Locate the problematic emails

Navigate to your inbox and attempt to open the same emails that caused the 30-second server-contacting delay in the desktop client.

3
Observe the loading time

If the emails open normally without delay, proceed to troubleshoot your desktop Outlook app. If they still lag, the issue may be with the Exchange server or the specific email content.

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Frequently Asked Questions

Why does Outlook say 'contacting the server' when opening emails?

This often happens when an email contains external content, such as high-resolution images, signatures, or tracking pixels, that Outlook is trying to download from a remote server before displaying the message.

How can I stop Outlook from automatically downloading external content?

You can disable automatic downloads in Classic Outlook by going to File > Options > Trust Center > Trust Center Settings > Automatic Download, and checking the box that says 'Don't download pictures automatically in standard HTML email messages'.

Does clearing the Outlook cache help with server connection issues?

Yes, a corrupted cache or large OST file can cause synchronization delays. Rebuilding your Outlook data file can often resolve persistent 'contacting server' messages.

What is the difference between Classic Outlook and New Outlook?

Classic Outlook is the traditional, fully-featured desktop application included with Microsoft Office, while New Outlook is a modernized, cloud-based version built on web technologies offering a streamlined interface.