---
title: "Error: Could Not Connect To OLAP Server JetNavOlap Deserialization Failed"
description: "## Symptoms   When you attempt to deploy and execute the OLAP server on SQL Server 2012, the following error message may appear: ![error-could-not-connect-to-olap-server-jetnavolap-deserialization-failed](https://globaldata365.com/wp-content/uploads/2023/06/image-34.png) Complete text from error message: *Could not connect to OLAP server JetNavOlap Deserialization failed. Requested value \"EnterpriseCore64\" was…"
url: "https://globaldata365.com/helpcenter/error-could-not-connect-to-olap-server-jetnavolap-deserialization-failed/"
updated: "2026-08-20"
category: Jet Analytics
tags:
  - jet analytics
  - Jet data manager
  - OLAP cubes
---

# Error: Could Not Connect To OLAP Server JetNavOlap Deserialization Failed

## Symptoms

 

When you attempt to deploy and execute the OLAP server on SQL Server 2012, the following error message may appear:

![error-could-not-connect-to-olap-server-jetnavolap-deserialization-failed](https://globaldata365.com/wp-content/uploads/2023/06/image-34.png)

Complete text from error message:

*Could not connect to OLAP server JetNavOlap
Deserialization failed. Requested value "EnterpriseCore64" was not found.*

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## Resolution

 

This error can be corrected by installing the latest service pack for SQL Server 2012.

 

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