# dbamp linked service failure pulling data from salesforce to sql **URL:** \ **Category:** CData DBAmp\ **Tags:** question, dbamp-error, salesforce, dbamp\ **Created:** [October 11, 2025, 2:49pm UTC](https://community.cdata.com/t/dbamp-linked-service-failure-pulling-data-from-salesforce-to-sql/1216 "2025-10-11T14:49:42Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![johnmiller](https://avatars.discourse-cdn.com/v4/letter/j/46a35a/32.png) [@johnmiller](https://community.cdata.com/u/johnmiller)\ **Post date:** [October 11, 2025, 2:49pm UTC](https://community.cdata.com/t/dbamp-linked-service-failure-pulling-data-from-salesforce-to-sql/1216/1 "2025-10-11T14:49:44Z")
version: 4.1.6.0 Description: All of my sql jobs pulling variations of sf\_refresh are failing as of 10/11/2025. Currently not bring any data down in our production environment ERROR: 10/11/2025 5:02:02 AM Log        Job History (SF\_Refresh Salesforce - ChargentBase\_\_Gateway\_\_c) Step ID        1 Server        AZSQL02 Job Name        SF\_Refresh Salesforce - ChargentBase\_\_Gateway\_\_c Step Name        1 Duration        00:00:00 Sql Severity    16 Sql Message ID    0 Operator Emailed     Operator Net sent     Operator Paged     Retries Attempted    1 Message Executed as user: NT SERVICE\SQLSERVERAGENT. --- Ending SF\_Refresh. Operation FAILED. [SQLSTATE 42000] (Error 50000)  --- Starting SF\_Refresh for ChargentBase\_\_Gateway\_\_c V4.1.4 [SQLSTATE 01000] (Error 0)  05:02:02: Using Schema Error Action of yes [SQLSTATE 01000] (Error 0)  OLE DB provider “DBAmp.DBAmp” for linked server “Salesforce” returned message “Error 5103 : Error: Zipped response from salesforce was missing valid zip header.”. [SQLSTATE 01000] (Error 7412)  05:02:02: Error: Unable to validate object: Cannot initialize the data source object of OLE DB provider “DBAmp.DBAmp” for linked server “Salesforce”. [SQLSTATE 01000] (Error 0)  --- Ending SF\_Refresh. Operation FAILED. [SQLSTATE 01000] (Error 0) ---
**Author:** ![nrapoza](https://avatars.discourse-cdn.com/v4/letter/n/df788c/32.png) [@nrapoza](https://community.cdata.com/u/nrapoza)\ **Post date:** [October 13, 2025, 8:22pm UTC](https://community.cdata.com/t/dbamp-linked-service-failure-pulling-data-from-salesforce-to-sql/1216/2 "2025-10-13T20:22:06Z")
I had the same error after Salesforce Winter 26 upgrade.  Maybe this will help you: > **[DBAmp linked server Error 5103 after Salesforce Winter 2026 release applied...](https://community.cdata.com/cdata-dbamp-49/dbamp-linked-server-error-5103-after-salesforce-winter-2026-release-applied-to-our-test-org-1667?tid=1667&fid=49)** > >  We are on DBAmp version  4.1.8.We have a SQL Server Agent job running daily on our test org. After Salesforce Winter ‘26 was applied to the org, we started getting the following failure message. How can we resolve this? OLE DB provider "DBAmp.DBAmp"... ---
**Author:** ![DylanO](https://avatars.discourse-cdn.com/v4/letter/d/b77776/32.png) [@DylanO](https://community.cdata.com/u/DylanO)\ **Post date:** [October 24, 2025, 7:47pm UTC](https://community.cdata.com/t/dbamp-linked-service-failure-pulling-data-from-salesforce-to-sql/1216/3 "2025-10-24T19:47:36Z")
This error is indeed due to the Salesforce Winter ‘26 release. This update from Salesforce has caused the old pre-v22 DBAmp to fall out of compatibility with the Salesforce API. The only fix for this issue is to upgrade to the latest version of DBAmp: Download DBAmp: [https://www.cdata.com/download/getfile.aspx?file=free/AFGH-A/setup.exe&name=CData%20DBAmp&tag=Download-dbamp](https://www.cdata.com/download/getfile.aspx?file=free/AFGH-A/setup.exe&name=CData%20DBAmp&tag=Download-dbamp) Upgrading DBAmp: [DBAmp - Upgrading an Existing Installation](https://cdn.cdata.com/help/AFH/dbampd/UpgradingAnExistingInstallation.html)