How ToWindowsWindows Server

How To: Fix The ‘Microsoft.Jet.OLEDB.4.0’ provider is not registered on the local machine.

Tested on IIS 10 running on 64-bit Windows Server 2019 Datacenter

This error is fairly simple to fix. There is no 64-bit Microsoft.Jet.OLEDB.4.0 provider, so you simply need to set the Application Pool for the site in question to 32-bit and the error should go away.

IIS Manager on the Application Pools pane

To do this:

  1. Open the Internet Information Services (IIS) Manager GUI
  2. Click on Application Pools on the left-hand side
  3. Then click on the application pool for the site in question
  4. Click on Advanced Settings on the right hand side under Actions > Edit Application Pool
  5. Toggle Enable 32-Bit Applications from False to True, and click OK.


Enable 32-Bit Applications showing False


Enable 32-Bit Applications showing True

The error should be gone 🥳

Jonathan Procter

Linux, Unix, and Windows server sysadmin.

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