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This article applies to:

BizTalk Server 2020 Branch, BizTalk Server 2020 Developer, BizTalk Server 2020 Enterprise, BizTalk Server 2020 Standard


This cumulative update package for Microsoft BizTalk Server 2020 contains hotfixes for the BizTalk Server 2020 issues that were fixed after the release of BizTalk Server 2020.

We recommend that you test hotfixes before you deploy them in a production environment. Because the builds are cumulative, each new update release contains all the hotfixes and all the security updates that were included in the previous BizTalk Server 2020 update release. We recommend that you consider applying the most recent BizTalk Server 2020 update release.

  • Each cumulative hotfix package includes all the component packages. However, a cumulative update package updates only those components that are installed on the system.

Note For more information about the latest service pack or cumulative update package for BizTalk Server, see the following article in the Microsoft Knowledge Base:

  • 2555976 Service Pack and cumulative update list for BizTalk Server

Note If you use the MQSeries adapter, MQSAgent.dll must be updated on the IBM WebSphere MQ server to the same cumulative update level that's on BizTalk Server. To do this, make sure that you run the same cumulative update setup on the IBM WebSphere MQ server. You may experience performance issues if you run mismatched versions.

This cumulative update package is a rollup update that contains the following items:

  • All new hotfixes that were released for BizTalk Server 2020

  • Other fixes that improve the product

Hotfixes that are included in Cumulative Update Package 2 for BizTalk Server 2020

The Microsoft Knowledge Base articles that discuss these hotfixes are published as the hotfixes become available. For more information about the BizTalk Server issues, see the following articles in the Microsoft Knowledge Base. 

BizTalk Server Adapter

KB article number



FIX: Using macro "" within TargetFileName in SFTP send port raises "NotSupportedException" error


FIX: SFTP receive location stops receiving files silently after experiencing file permission issues


FIX: When sending message to SB-Messaging send port, the binding property "DefaultScheduledEnqueueTimeUtc" causes an error


FIX: WCF-SQL adapter does not read encrypted varchar(max) column from SQL


FIX: SFTP receive location stops polling intermittently


Improvement: SFTP adapter improvements


Improvement: SB-Messaging adapter now supports FIFO or ordered processing


FIX: SB-Messaging adapter does not honor the ContentType set in the message context properties of an outbound message


FIX: Unable to receive messages using LogicApp adapter because the receive location is getting disabled


FIX: SAP adapter ignores the DatsMinToDateTime value set in the DataTypesBehavior binding property


FIX: WCF-SAP connections fail because of special characters in passwords


Improvement: MQSeries adapter supports 3,600-second wait interval and 0-seconds polling interval

BizTalk Server General

KB article number



FIX: "Cannot insert duplicate key row in object 'dbo.bts_LogShippingHistory' with unique index" error while configuring log shipping destination


FIX: BizTalk host instances and Admin console don't start if the default web proxy is disabled

BizTalk Server Runtime, Pipelines and Tracking

KB article number



FIX: Messages get suspended after error in stored procedure 'bts_AddConvoySetInstance': "Arithmetic overflow error converting expression to data type int"


FIX: Scheduled receive location polling outside service window

BizTalk Server Design Tools

KB article number



FIX: Loading of custom functoids fails silently without surfacing errors


FIX: Test map fails on computer with only Dev Tools features installed


FIX: Promoting properties in EDI schema causes Visual Studio to stop responding

BizTalk Server Administration Tools and Management APIs

KB article number



FIX: Import/export send handler binding information for dynamic send ports


FIX: NullReferenceException in BizTalk console when searching for tracked messages in an archived DTA DB

Updated External Dependencies


Updated version










How to get Cumulative Update Package 2 for BizTalk Server 2020

BizTalk Server uses a cumulative update (CU) model for providing fixes and updates. Each CU includes new updates in addition to all the updates that were included in previous CUs. We recommend that you test and then apply the latest CU to all BizTalk environments.

All new fixes are publicly released in the upcoming CU. Standalone fixes might be provided before the next CU if the reported problem is very important, has a significant business effect, and doesn't have a workaround. If standalone fixes are provided, they require that the latest released CU be installed.

Download Center

The following file is available for download from the Microsoft Download Center:

Download Download Cumulative Update 2 for BizTalk Server 2020 now

Release date: April 19, 2021

For BizTalk Developer Tools

If you have BizTalk Developer Tools installed, you must install the latest version of BizTalk Server Visual Studio extension (build in addition to this CU package. The extension can be installed from or from within Visual Studio through Manage Extensions.

For more information about how to download Microsoft support files, see how to obtain Microsoft support files from online services.

Microsoft scanned this file for viruses by using the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to it.


For more information about BizTalk Server hotfixes, see Information about BizTalk Server hotfixes.

Learn about the standard terminology that's used to describe Microsoft software updates.

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

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