First determine whether “content” means a blank message body, blocked pictures, an attachment, older messages, or entire missing messages, because each requires different troubleshooting.
1. Check the connection and mailbox copy
- Open a website in a browser to confirm that the computer is online.
- Sign in to the email provider’s webmail and open the same message.
- Content is also missing in webmail: the desktop Outlook cache is not the cause; contact the sender or email provider.
- Content is complete in webmail: continue below because the issue is local to classic Outlook.
- Check the Outlook status bar. If it says Working Offline, Disconnected, or Trying to connect, select Send/Receive > Work Offline to return online, and then select Send/Receive All Folders.^1^
For a Microsoft 365 or Exchange primary mailbox using Cached Exchange Mode:
- Select Send/Receive > Download Preferences.
- Select Download Full Items.
- If older messages are affected, open File > Account Settings > Account Settings.
- Select the Exchange account, choose Change, and set Download email for the past—called Mail to keep offline in some versions—to All.
- Restart Outlook and allow synchronization to finish.
Microsoft documents that using another download preference together with a limited offline-mail period can leave mailbox content on the server instead of downloading all items.^2^
These settings are an Exchange cached-mailbox path; do not apply them to POP or IMAP accounts.
If this is a shared or delegate mailbox: use Outlook search with the scope set to Current Folder to retrieve server-side items. Microsoft documents this as the separate workaround for shared or delegate folders in Cached Exchange Mode.^2^
3. If complete messages are visible in webmail but absent from the Cached Mode Inbox
This procedure applies when entire messages, rather than only their bodies, are missing locally:
- Close Outlook.
- Press Windows+R, enter the following command, and select OK:
outlook.exe /cleanips
- If the messages remain missing, right-click Inbox and select Properties > General > Clear Offline Items.
- Accept the warning, select OK, highlight the Inbox, and press Shift+F9 to download it again.
Clear Offline Items removes the local cached copies from that folder; the server copies then resynchronize. Microsoft documents these steps for messages that appear in webmail or Online Mode but not in the Cached Mode Inbox.^3^
4. If messages open but their bodies remain blank
The available Microsoft guidance does not identify one specific cause for blank bodies. Use these general isolation steps:
- Close Outlook, press Windows+R, enter
outlook.exe /safe, and select OK.
- Open an affected message.
- If it displays correctly, disable COM add-ins through File > Options > Add-ins > Manage: COM Add-ins > Go. Clear the checkboxes—do not remove the add-ins—and re-enable them one at a time.
- If Safe Mode makes no difference, create and test a new Outlook profile. Hold Shift while starting Outlook to choose the new profile.
- If the new profile also fails, repair Office from Windows Settings > Apps > Installed apps > Microsoft 365/Office > Modify. Try Quick Repair, followed by Online Repair if necessary.^4^
If the issue concerns only external pictures or attachments, provide the exact behavior or error message; the mailbox-cache procedures above do not establish a fix for those separate symptoms.
References
- Classic Outlook
- "Click here to view more on Microsoft Exchange" hyperlink is missing
- Sometimes emails do not appear in Cached mode Inbox even if they were synchronized down from mailbox
- Classic Outlook