---
title: "ExplorerOM 64-bit Error"
slug: "explorerom-64-bit-error"
updated: 2025-01-31T04:09:24Z
published: 2025-01-31T04:09:24Z
canonical: "docs.biztalk360.com/explorerom-64-bit-error"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.biztalk360.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ExplorerOM 64-bit Error

BizTalk360 heavily depends on the Microsoft.BizTalk.ExplorerOM DLL that comes with Microsoft BizTalk Server. One of the restrictions of the component is that it does not support 64-bit.

## IIS 7.0

IIS 7.0 is much more granular than IIS 6.0. Therefore, you can setup 32-bit mode at the Application Pool level rather than on server level, allowing to run both 32-bit and 64-bit application on the same server.

Here's how you can set this up from the IIS 7 Manager:

1. Right click on the Application Pool and select "**Advanced Settings…**" or select the same from the Actions pane after selecting the Application pool
2. Change the "**Enable 32-bit Applications**" to True (if you want the application pool to spawn in a 32-bit mode)
3. Click **OK** to save the changes

## IIS 6.0

Note:

On systems with IIS 6, the Enable32bitAppOnWin64 property is a global property that affects all websites and applications on an IIS server. Make sure you do not have any other 64-bit applications running on the same server or plan to run BizTalk360 in a different server and point to the environment remotely.

ASP.NET 2.0, 32-bit version To run the 32-bit version of ASP.NET 2.0, follow these steps:

1. Click Start > Run. Type cmd, and then click OK
2. Type the following command to enable the 32-bit mode:

```plaintext
cscript %SYSTEMDRIVE%\inetpub\adminscripts\adsutil.vbs SET W3SVC/AppPools/Enable32bitAppOnWin64 1
```

1. Type the following command to install the version of ASP.NET 2.0 (32-bit) and to install the script maps at the IIS root and under:

```plaintext
%SYSTEMROOT%\Microsoft.NET\Framework\v2.0.50727\aspnet_regiis.exe -i
```

1. Make sure that the status of ASP.NET version 2.0.50727 (32-bit) is set to Allowed in the Web service extension list in Internet Information Services Manager