Offline synchronization fails in Dynamics CRM client for Outlook

Adjust the registry for the Microsoft Dynamics CRM client for Outlook with offline access to tune the values used to synchronize data from Microsoft Dynamics CRM to the SQL Express database used while offline in the Microsoft Dynamics CRM client for Outlook with offline access.

All registry entries listed below exist in the following location

HKCU\Software\Microsoft\MSCRMClient

Name: OfflineRowsBatchSize

Type: DWORD

Valid Value: Positive integer value greater than or equal to 1

Default Value: 10000

Purpose: Size for each initial batch of data downloaded from the CRM Server


Name: OfflineMaxRetryCount

Type: DWORD

Valid Value: Positive integer value greater than or equal to 1

Default Value: 3

Purpose: Number of times a batch is retried before failing. Each failure may retry with a smaller batch size depending on the rate of decrease

Name: OfflineIncreaseRate

Type: DWORD

Valid Value: Positive integer value greater than or equal to 1

Default Value: 2

Purpose: How much next batch is increased in size (previous batch size * OfflineIncreaseRate) if the previous batch was completed successfully in the allow time span.

Name: OfflineDecreaseRate

Type: DWORD

Valid Value: Positive integer value greater than or equal to 1

Default Value: 2

Purpose: How much next batch is decreased in size (prevoius batch size / OfflineDecreaseRate) if the previous batch failed to complete successfully or did not complete in the allowed time span.

Name: OfflineMaxBatchTimeMillSec

Type: DWORD

Valid Value: Positive integer value greater than or equal to 1 measured in milliseconds

Default Value: 60000

Purpose: The max time in milliseconds that is acceptable to download a batch before the batch size is decreased

Name: OfflineMinBatchTimeMilliSec

Type: DWORD

Valid Value: Positive integer value greater than or equal to 1 measured in milliseconds

Default Value: 10000

Purpose: The min time in milliseconds that is acceptable to download a batch before the bacth size is increased

Note: OfflineMinBatchTimeMilliSec must be less than or equal to OfflineMaxBatchTimeMilliSec

Note: If you set OfflineMinBatchTimeMilliSec equal to OfflineMaxBatchTimeMilliSec then the batch size will stay the same and never increase or decrease. This may cause the sync process to take much longer than normal, but may allow the process to complete if the errors received are due to too large of files attempting to be downloaded from the CRM Server.