1. Exchange Integration Manager
  2. Troubleshooting Exchange Integration Manager
  3. Troubleshooting Common Problems

Troubleshooting Common Problems

Warning:

Support for Exchange Integration Manager (EIM) will end on January 13, 2026. After this date, you will not receive any updates, issue fixes, or customer support for EIM.

Effective October 1, 2026, you may not be able to use EIM to integrate SuiteProjects Pro with Exchange Online. The EIM installer and all access to SuiteProjects Pro from EIM may be removed in future.

If your organization uses the EIM desktop application to integrate SuiteProjects Pro with Exchange Online or Exchange Server, switch to an alternative solution before October 1, 2026. For more information, see End of Support for Exchange Integration Manager.

The following table lists common errors or scenarios and their solutions. Use this table in addition to the Integration Manager log file to try and troubleshoot your integration before you contact SuiteProjects Pro Support.

Error / Scenario

Solution

Error "The remote server returned an error: (403) Forbidden"

Verify that the version of Exchange Server specified in SuiteProjects Pro Exchange Integration Setup matches the version of Exchange Server you are running on your mail server. See Connecting Exchange Integration Manager with On-Premise Exchange Server.

Error: "Exchange Server doesn't support the requested version"

Verify that the version of Exchange Server specified in SuiteProjects Pro Exchange Integration Setup matches the version of Exchange Server you are running on your mail server. See Connecting Exchange Integration Manager with On-Premise Exchange Server.

Error: "Exception: The handle is invalid" when exporting bookings from SuiteProjects Pro to user mailboxes stored in an Exchange Online organization.

Verify your Exchange Online credentials. In particular, verify that the client secret is still valid. This error is often due to an expired client secret. See Connecting Exchange Integration Manager with Microsoft Entra ID or Exchange Online and Registering Exchange Integration Manager With Microsoft Identity Platform.

Error: "Could not lock file" when running SuiteProjects Pro Exchange Integration Setup .

Sign in to Windows as an administrator, and run SuiteProjects Pro Exchange Integration Setup again, or right-click the shortcut and choose Run as administrator.

Error: "Status: Access is not enabled. Please contact your SuiteProjects Pro account administrator to enable this functionality." when clicking File > Update in SuiteProjects Pro Exchange Integration Setup

Contact SuiteProjects Pro Support and request the following for your account:

  • Disable and enable again Access to Exchange Integration Manager.

  • Enable and disable again Access to SuiteProjects Pro Outlook Connector.

The Exchange user mailbox dropdown list does not include the user mailbox I want to map to the SuiteProjects Pro user record.

Verify that the user mailbox is not already mapped to another SuiteProjects Pro user record.