Error message following October 2017 update

To fix this error, you need to set a registry key. See "BCM Errors after October 2017 Outlook Update" for more information.

Business Contact Manager for Outlook could not complete your last action or action. Please try again.

Outlook Customer Manager

Outlook Customer Manager is the Office 365 replacement for BCM and requires an Office 365 Business Premium license.

Outlook MVP Eric Legault has a free BCM to Outlook Customer Manager (OCM) migration tool at BCM Migration Assistant. This utility automates migration of business contacts, accounts, and opportunities to OCM.
Key features of the BCM Migration tool:

Migrate default business contacts, accounts, and opportunity fields to the equivalent OCM fields
Map additional BCM fields to OCM custom fields
Automatically migrate BCM opportunity stages and create new OCM deal stages
Migrate Business Notes and Phone Log history to OCM activity timeline

Eric also offers paid migration services, if you want his help migrating BCM to Outlook Customer Manager.

Goodbye BCM

Office 365 subscribers who are using BCM will need to block automatic upgrades as BCM 2013 is the last BCM version. It will not work with Outlook 2016. See Outlook 2016: No BCM for more information and the steps needed to turn off automatic upgrades.

Outlook BCM 2013

The updated BCM for Outlook 2010 and Outlook 2013 (released November 2014) is now available. It is currently available to all Outlook 2010 and 2013 users.

BCM on Windows 10

BCM Errors after Upgrading to Windows 10

Office 2010 and BCM

In Office 2010, Business Contact Manager is included only in the volume-license suite and as part of a TechNet or MSDN subscription. BCM 2010 is not included in any of the retail suites but is available for download.

Note: You should use the updated BCM for Outlook 2010 and Outlook 2013.

Are you having problems with BCM? See:

BCM (Business Contact Manager)

Our original FAQ (for BCM 2003) is now at Microsoft Business Contact Manager - Frequently Asked Questions

Other sources for BCM help:
Business Contact Manager for Outlook Developer Guide

BCM Toolbar Not Visible in Outlook

If the BCM toolbar is not visible in Outlook, first check to verify that Outlook doesn't have it disabled. If using Outlook 2013, to heck if Business Contact Manager is enabled: Go to File,Options, Addins Select the Disabled Items in the menu on the bottom right hand corner the click Go If Business Contact Manager

BCM Errors after October 2017 Outlook Update

Fix for BCM error message: Business Contact Manager for Outlook could not complete your last action or action. Please try again.

BCM Errors after Upgrading to Windows 10

Several users are having issues with Outlook and Business Contact Manager (BCM) after upgrading to Windows 10.

Sharing Customer Manager Records

How to share contacts, companies and deals with the other members of your Customer Manager team members using Office 365 Outlook 2016 Customer Manager.

New: Outlook Customer Manager

A replacement for Outlook Business Contact Manager (BCM) is rolling out to Office 365 Business Premium subscribers, beginning with those who have First Release enabled. Customer Manager uses Office 365 services to search your mailbox and store related information.