# DBAmp linked server Error 5103 in Prod Org

**URL:** <https://community.cdata.com/t/dbamp-linked-server-error-5103-in-prod-org/1212>\
**Category:** CData DBAmp\
**Tags:** question\
**Created:** [October 7, 2025, 1:07pm UTC](https://community.cdata.com/t/dbamp-linked-server-error-5103-in-prod-org/1212 "2025-10-07T13:07:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Pralayankar](https://avatars.discourse-cdn.com/v4/letter/p/ee59a6/32.png) [@Pralayankar](https://community.cdata.com/u/Pralayankar)\
**Post date:** [October 7, 2025, 1:07pm UTC](https://community.cdata.com/t/dbamp-linked-server-error-5103-in-prod-org/1212/1 "2025-10-07T13:07:14Z")

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Getting the below error in Prod

OLE DB provider “DBAmp.DBAmp” for linked server “SALESFORCE\_LS” returned message “Error 5103 : Error: Zipped response from salesforce was missing valid zip header.”. [SQLSTATE 01000]

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**Author:** ![Ethem\_Q](https://sea3.discourse-cdn.com/cdata/user_avatar/community.cdata.com/ethem_q/32/1997_2.png) [@Ethem\_Q](https://community.cdata.com/u/Ethem_Q)\
**Post date:** [October 8, 2025, 12:17pm UTC](https://community.cdata.com/t/dbamp-linked-server-error-5103-in-prod-org/1212/2 "2025-10-08T12:17:31Z")

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Hi ​ @Pralayankar

This error stems from a recent change that Salesforce has made on their side in how they respond to certain API calls, in a way that the older pre-v22 DBAmp cannot handle. This is part of their Winter '26 release, and the 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)

For more details about upgrading you can refer to the docs: [DBAmp - Installing and Configuring DBAmp](https://cdn.cdata.com/help/AFH/dbampd/Installation_Upgrading.html)

You can find release notes here to see what has changed with this version: [DBAmp - Release Notes](https://cdn.cdata.com/help/AFH/dbampd/releasenotes.html)

Note that the two versions have a different syntax to their serial numbers - you will want to make sure you have your v22+ serial number for this installation

If you have any other questions, don’t hesitate to reach out to [support@cdata.com](mailto:support@cdata.com)&nbsp;, and one of our CData DBamp support specialists will further assist you.