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Salesforce for Outlook most common sync error messages

Knowledge Article Number 000193803
Description
Learn how to resolve some of the most common Salesforce for Outlook Sync error messages, below. 
 

List of all the knowledge articles mentioned below
 

Article Number: <none>
Article Subject: Salesforce for Outlook Sync Error:
Object reference not set to an instance of an object

Article Number: 000187478
Article Subject: Salesforce for Outlook Sync Error: INVALID_FIELD: ActivityDateTime,Description,id,ACTIVITYDATE,ISALL

Article Number: 000028644
Article Subject: Salesforce for Outlook causes Microsoft Outlook to crash

Article Number: 000007599
Article Subject : Salesforce for Outlook error: Non-Unicode .pst file

Article Number: 000194175
Article Subject : Salesforce for Outlook is unable to communicate with Outlook

Article Number: 000073330
Article Subject : Salesforce for Outlook events or tasks sync fails

Article Number 000211825       
Article Subject:  SFO Sync fails - Unable to sync this record because of a record conversion problem.

Article Number 000187940
Article Subject:  SFO sync fails with - An item with the same key has already been added error message

Article Number: 000206641
Article Subject:  Salesforce for Outlook sync fails for Events - Property not found PropertyName:ISPRIVATE


Article Number: 000199078   
Article Subject:  SFO sync fails with required fields are missing: [LastName] for Outlook record”

Resolution

Sync Error 1

Salesforce for Outlook Sync Error: Object reference not set to an instance of an object

 
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Root Cause:
This is due to a bug that was fixed in Salesforce for Outlook version 3.0.2. This usually would happen with SFO version 3.0.1 and older where the Data Set, Sync Direction or/and the option to sync recurring events check box in the Data Set field were modified between syncs and changes are made to the occurrences of the recurring events series 
 
The Trace.log also contains the follow lines
 
20xx-xx-xx 1:37:43,860 [SyncThread] INFO  general         [Event]Sync Failed because of Error:Sfdc.Synchronization.SyncEngineException: ***********  Sync engine encountered an unexpected error that terminated synchronization. ---> System.NullReferenceException: Object reference not set to an instance of an object.
 
Resolution
To address this issue simply download and install SFO v3.0.2 or later
Here is a list of a few useful articles to troubleshoot and address this issue:
1- Using the Article Number 000220019 find out what version of SFO you have installed on your computer. If it is v3.0.1 or older then refer to your IT or/and the Step 1 under Section 2 of the Article Number 000175817 - Complete Uninstall install for Salesforce for Outlook .
   *******************************


Sync Error 2

Salesforce for Outlook Sync Error: INVALID_FIELD: ActivityDateTime, Description, id, ACTIVITYDATE, ISALLDAYEVENT

 
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Root Cause:
Missing field such as All Day Activity from the Event's page layout or FLS (Field Level Security) is set to Hidden, not visible for the user profile on one of the Events field.
 
Resolution
To address this issue refer to Article Number 000187478
Article Subject:
Salesforce for Outlook sync Error: INVALID_FIELD: ActivityDateTime, Description, id, ACTIVITYDATE, ISALL

 
   *******************************

Sync Error 3

Sync starts but SFO system tray icon gets stuck on a certain % and the error message below pops up in the background (you may have to minimize other applications to see)
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Root Cause:
Could be related to one or more problematic records in Outlook, a corrupted Outlook data file, connectivity issues, missing Microsoft patches and updates, conflicting with EMET security software, corrupted Windows profile, or more
 
Resolution
To address this issue refer to  Article Number        000028644
Article Subject: Salesforce for Outlook causes Microsoft Outlook to crash
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Sync Error 4

Salesforce for Outlook events or tasks sync fails
 
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Root Cause:
Affected users profile does not have the 'Edit' option enabled on the Event or Task object.
 
Resolution
To address this issue refer to  Article Number        000073330
Article Subject: Salesforce for Outlook events or tasks sync fails
 
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Sync Error 5

User may receive an  error message with synchronizing of Contacts and/or Events in Office 2007 or 2010. The error messages displays a communication error with

Outlook and also sync log may contain an error message referring to a Mapped fields length or a message about non-Unicode PST found
Error:Sfdc.Outlook.OLPropertiesInvalidException: Unhandled outlook property type non-Unicode PST found
Sfdc.Util.Common.LogicalErrorException: Mapped Fields and dataset fields length is different

Root Cause:
Microsoft Outlook using a non-Unicode 97-2002 data file (.pst) that is not compatible with Outlook 2007, 2010 and 2013
 
Resolution
To address this issue refer to  Article Number        000007599
Article Subject: Salesforce for Outlook error: Non-Unicode .pst file

 
   *******************************

Sync Error 6

Salesforce for Outlook is unable to communicate with Outlook


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Root Cause:
Corrupted Outlook data file (.OST), Outlook not running in Exchange cache mode and having a big data file with slow network connection causing the connection to drop, existence of a non-Unicode PST data file in Outlook, grayed
out folder in the SFO wizard, Windows User Account Control being enabled, or etc

Resolution
To address this issue refer to   Article Number        000194175
Article Subject: Salesforce for Outlook is unable to communicate with Outlook

 
   *******************************

Sync Error 7

Salesforce for Outlook Events or Tasks sync fails
 
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Trace and sync logs located in user folder would also show the following error:
ERROR [Event] ***********  Sync Engine  *********** Error
Exception code:UNKNOWN_EXCEPTION Sfdc.Server.SfdcServerException: 
syncapi.Command.NoAccessException: Entity is not readable


 
Root Cause:
Affected users profile does not have the 'Edit' option enabled on the Event or Task object.
 
Resolution
To address this issue refer to   Article Number        000073330
Article Subject: Salesforce for Outlook events or tasks sync fails
 
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Sync Error 8

Salesforce for Outlook sync fails - Unable to sync this record because of a record conversion problem.
 
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Trace and sync logs located in user folder would also show the following error:


 
ERROR [Event] An error occurred in converting SFDC record <event name> of type EVENT. Error: Sfdc.
Synchronization.RecordMappingException: An Error occurred in Converting To Outlook
 Record ---> System.InvalidCastException: Unable to cast object of type 'Sfdc.Server.SfdcRecordId' to
 type 'System.String'.   

ERROR [Event] ***********  Sync Engine  ***********  Error System.ArgumentException: 
An item with the same key has already been added.   at System.ThrowHelper.
ThrowArgumentException(ExceptionResource 
resource)

 
Root Cause:
 Corrupted Outlook Configuration or Data Set in Salesforce
 
Resolution
To address this issue refer to    Article Number 000211825       
Article Subject:  SFO Sync fails - Unable to sync this record because of a record conversion problem.
   *******************************

Sync Error 9

Salesforce for Outlook sync fails - Unable to sync. Review the appropriate log for details. 
A sync error occurred. Review the appropriate log for details. OR An item with the same key has already been added

 
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OR

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Root Cause:
 Possible duplicate redemption key, sometimes the error goes away on its own after another sync
 
 
Resolution
To address this issue refer to Article Number 000187940
Article Subject:  SFO sync fails with - An item with the same key has already been added error message
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Sync Error 10

Salesforce for Outlook sync fails -  Property not found PropertyName:ISPRIVATE
 
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Sync logs located in user folder would also contain the following error:
20xx-xx-xx 08:51:54,237 ERROR [Event] ***********  Sync Engine  ***********  Error Sfdc.Server.
SfdcSessionException:
 Property Not found PropertyName:ISPRIVATE ---> Sfdc.Common.PropertyNotSetException: Property Not
 found PropertyName:ISPRIVATE
   at Sfdc.Server.SfdcEvent.get_IsPrivate()


 
 
Root Cause:
This error occurs if the default field mapping between the Outlook Sensitivity field and the Salesforce Private field is deleted
 
Resolution
To address this issue refer to : Knowledge Article Number: 000206641
Article Subject:  Salesforce for Outlook sync fails for Events - Property not found PropertyName:ISPRIVATE
   ********************************

Sync Error 11

Salesforce for Outlook sync fails - required fields are missing: [LastName] for Outlook record”
 
User-added image
 
 
Trace and sync logs located in user folder would also contain the following or similar error:
ERROR [Contact] Create to SFDC gave error(s) Sfdc.Server.SfdcServerCreateUpdateException: 
Required fields are missing: [LastName] for Outlook record”.

 
Root Cause:
This happens when Contacts are missing the Last Name value
 
Resolution
To address this issue refer to: Knowledge Article Number: 000199078   
Article Subject:  SFO sync fails with required fields are missing: [LastName] for Outlook record”
   *******************************




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