---
sourceDocument: Zurich Release Notes
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/zurich/release-notes

 Release :

    - zurich

ft:locale :

    - en-US

ft:publication_title :

    - Zurich Release Notes

ft:clusterId :

    - rn

bundleId :

    - rn


---

# Zurich Patch 4 Hotfix 4b

# Zurich Patch 4
Hotfix 4b {#ariaid-title1}

Release version: Zurich  
Updated March 11, 2026  
![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read  
The Zurich Patch 4 Hotfix
4b release contains fixes to these problems.

Build information:
:   Build date: 03-05-2026_1840
:   Build tag: glide-zurich-07-01-2025__patch4-hotfix4b-03-03-2026
Important:  
For more information about how to upgrade an instance, see [ServiceNow upgrades](https://servicenow-prod.fluidtopics.net/fUsB9lFROd1_5jM2lwjOwQ "The upgrade process moves your instance to a new ServiceNow release version. Understand the difference between upgrading and patching, release definitions, rollback and backup options, and how to test your non-production and production instance upgrades.").

For more information about the release cycle, see the [ServiceNow Release Cycle](https://support.servicenow.com/kb_view.do?sysparm_article=KB0547244).{#zurich-patch-4-hf-4b-PO__p_download-version}  
Note:  
This ServiceNow AI Platform® major family release is now available in ServiceNow's Regulated Market environments. For more information about services available in isolated environments, see [KB0743854](https://support.servicenow.com/kb_view.do?sysparm_article=KB0743854).

## Fixed problem {#zurich-patch-4-hf-4b-PO__section_w5h_qlt_m3c}

{#zurich-patch-4-hf-4b-PO__all-other-fixes__entry__4}

| Problem | Short description | Description | Steps to reproduce |
|-|-|-|-|
| Inbound API Integration Usage Framework PRB1997896 | HttpServletRequest is recycled during long transactions, which causes unhandled exceptions in HttpRequest AttributeAccessor | Long-running SOAP transactions, including ODBC queries, can fail to complete on Zurich instances due to an unhandled error during telemetry collection. | Scenario 1: Attempt to query large datasets using ODBC. Scenario 2: To reproduce using only SOAP, increase the max limit and query 30k+ records in a single request. |
[ ]

{#zurich-patch-4-hf-4b-PO__all-other-fixes}

## Fixes included {#zurich-patch-4-hf-4b-PO__section_x5h_qlt_m3c}

Unless any exceptions are noted, you can safely upgrade to this release version from any of the versions listed below. These prior versions contain PRB fixes that are also included with this release.
Be sure to upgrade to the latest listed patch that includes all of the PRB fixes you are interested in.

* [Zurich Patch 4 Hotfix 3b](https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB2774148)
* [Zurich Patch 3](https://servicenow-prod.fluidtopics.net/y_CcMaN67V78l~uT3H1T~Q "The Zurich Patch 3 release contains important problem fixes.")
* [Zurich Patch 2](https://servicenow-prod.fluidtopics.net/3Y_k_JRSgF6zCGckwZBWJQ "The Zurich Patch 2 release contains important problem fixes.")
* [Zurich Patch 1](https://servicenow-prod.fluidtopics.net/ryznRs456gpDAGVQsRzm4g "The Zurich Patch 1 release contains important problem fixes.")
* [Zurich security and notable fixes](https://servicenow-prod.fluidtopics.net/iSdf73GoBI~IFroDd~8D8A "The Zurich release contains important problem fixes.")
* [All other Zurich fixes](https://servicenow-prod.fluidtopics.net/y_JpjqwOyLF0ufqO7vRiug "The Zurich release contains important problem fixes.")
{#zurich-patch-4-hf-4b-PO__ul_lwm_k3b_lgc}