Using classic Outlook for Windows in business environments
If the missing snapshots are image attachments inside messages in classic Outlook for Windows, first check whether Outlook has gone into offline mode.
- In Outlook, open Send/Receive.
- Select Work Offline once.
- Confirm the button is no longer shaded and the status bar no longer shows Working Offline or Disconnected.
If Outlook is already online, test whether an add-in is interfering:
- Press Windows key + R.
- Start Outlook in Safe Mode.
- Open a message that should show the snapshots.
- If the images appear in Safe Mode, an Outlook add-in or security software integration is likely causing the problem.
Also check this Windows setting:
- Close Outlook.
- Open Internet Options.
- Go to Advanced.
- Make sure Do not save encrypted pages to disk is not selected.
- Restart Outlook and test again.
If the issue is specifically that attached files are not visible in a message you are composing, and the message is in Plain Text format, Outlook can hide the attachment from the Attached line even though the recipient still receives it. In that case:
- In a new message, open Format Text.
- Select HTML in the Format group.
- To make this the default, go to File > Options > Mail and set Compose messages in this format to HTML.
If this started after an Office update, check the Office build and update Outlook:
- Open Outlook or another Office app.
- Go to File > Office Account or Account.
- Check the version under Office Updates.
- Select Update Options > Update Now.