Outlook Error Codes

Fix Outlook ADDriverStoreAccessNonLocalException with an iCloud Account

Ayan Masood Sep 29, 2026 868 views

Question details

The user needs to resolve an Active Directory error that prevents Outlook from opening or syncing properly when using an iCloud email account.

Fix Outlook ADDriverStoreAccessNonLocalException with an iCloud Account

Product: Microsoft Outlook
Device & OS: Windows
Scenario: Opening Microsoft Outlook and authenticating or syncing an iCloud email account.
Observed behavior: Outlook fails to launch or sync, displaying the error message Microsoft.Exchange.Data.Directory.ADDriverStoreAccessNonLocalException.

Before you start

Ensure your Windows operating system and Microsoft Office suite are fully updated to the latest versions, and check the Microsoft 365 Service Health dashboard for any ongoing server outages before proceeding.

Solution 1Recommended

Clear Outlook's Local State and Cache

Use this solution to safely remove corrupted or conflicting cached session data that is triggering the Active Directory exception.

Modern versions of Outlook cache local session data to improve load times. If these files become corrupted, particularly with third-party accounts like iCloud, they can cause Exchange-related errors.

Run the clear local state command

Press Windows + R to open the Run dialog. Type 'olk.exe --clearLocalState' and press Enter. Once completed, reopen Outlook and attempt to sign in.

Navigate to local application data

If the issue persists, press Windows + R again, enter '%LocalAppData%', and click OK. Open the 'Microsoft' folder from the directory that appears.

Delete the Olk folder

Locate the folder named 'Olk'. Right-click to copy and paste it elsewhere as a backup, then delete the original 'Olk' folder. Restart Outlook so it can rebuild the required files and prompt you to sign in.

Data Safety: Deleting the Olk folder only removes locally cached custom settings. Your iCloud mailbox content is safely stored in the cloud and will resynchronize after a successful sign-in.

Solution 2

Remove Obsolete Credentials and Repair Office

Use this method if outdated authentication tokens in Windows are blocking Outlook from establishing a secure connection.

Solution 3

Create a New Outlook Profile

Setting up a fresh Outlook profile bypasses underlying configuration corruption associated with your iCloud account.

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Frequently Asked Questions

What causes the ADDriverStoreAccessNonLocalException error in Outlook?

This error is typically triggered by corrupted local cache files, conflicting credential configurations in Windows, or temporary synchronization issues with Microsoft's Exchange Active Directory services while trying to route third-party accounts like iCloud.

Will clearing the local Outlook state delete my saved iCloud emails?

No. Running the clear local state command or deleting the 'Olk' folder only removes temporary cached session data and local device settings. Your actual emails remain securely stored on Apple's iCloud servers and will download again once you reconnect.

Why does an iCloud account trigger an Exchange or Active Directory error?

Modern versions of Outlook use Microsoft's cloud-backed synchronization technology to connect IMAP accounts like iCloud. This means the connection routes through Microsoft's infrastructure, which can inadvertently trigger Exchange-specific directory errors if the local cache is out of sync.

How can I check if this is a widespread Microsoft server issue?

You can check the operational status of Microsoft's services by visiting the official Microsoft 365 Service Health portal online or checking Microsoft Support's official social media channels for real-time incident reports.

Microsoft Office Error Codes