"outlook cannot delete one or more items because of a retention policy"

Hi SeanFrazer,

This issue can be caused by a few different things, but the most common cause is a conflict between a retention policy and a retention label. To fix the issue, you can try the following:

1. Check the retention policy for the inbox folder. Make sure that the policy does not prevent deletion of emails.
2. Check the retention label for the email. Make sure that the label does not prevent deletion of emails.
3. Try deleting the email from Outlook Web App. If you are able to delete the email from Outlook Web App, then the issue is likely caused by a problem with your Outlook client.
4. Repair your Outlook installation. This can often fix problems with retention policies and retention labels.

Here are some links you can use:

• Fix Outlook cannot delete one or more items because of a retention policy error: https://answers.microsoft.com/en-us/outlook_com/forum/all/message-store-full-but-cannot-delete-anything-to/a339c9f7-b5b1-486b-8a73-7d5401cadc0a
• How to remove retention policy in Outlook: https://www.linkedin.com/pulse/how-disable-retention-policy-office-365-stellardatarecovery
• Understanding retention policies and retention labels in Outlook: https://support.microsoft.com/en-au/office/assign-retention-labels-and-archive-policies-in-outlook-on-the-web-890bcbb3-0f0b-4771-ba5a-6ecb77729264