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Technical Article   Error:  Error 1935

Article ID: 28553
Software:  ArcIMS 9.0, 9.1, 9.2, 9.3, 9.3.1 ArcSDE 9.0, 9.1, 9.2, 9.3, 9.3.1 ArcGIS - ArcEditor 9.0, 9.1, 9.2, 9.3, 9.3.1 ArcGIS - ArcInfo 9.0, 9.1, 9.2, 9.3, 9.3.1 ArcGIS - ArcView 9.0, 9.1, 9.2, 9.3, 9.3.1 ArcReader 9.0 ArcGIS Server 9.0 ArcGIS Engine Developer Kit 9.0
Platforms:  Windows NT 4.0, 2000, XP, 2003Server

Error Message

When installing ArcGIS Server, ArcGIS Desktop, including ArcView, ArcEditor, ArcInfo; or ArcIMS, the following error message may appear:

"Error 1935: An error occurred during the installation of assembly component {303994BA-6487-47AE-AF1D-7AF6088EEBDB}. HRESULT: -2147024894."

After clicking 'OK' the installation rolls back.


This error occurs during the system update stage of the installation, when Microsoft XML Parser 4.0 installs. The same error may occur when installing Microsoft XML Parser 4.0 by itself.

The cause can vary, but frequently may be caused by system files being used by another product.

Solution or Workaround

Follow the steps below to work around this error.

  1. Stop as many programs as possible. Some programs may be running in the background, such as adware or spyware. If possible, remove them.
  2. Stop as many Windows services as possible by navigating to Control Panel > Administrative Tools > Services.
  3. Verify that Internet Explorer 8.0 or later is installed. Verify that all Microsoft service packs and updates have been installed.
  4. Install Microsoft XML 4.0 SP2 before continuing. The download link is in the Related Information section below.

     The previous XML parser may need to be uninstalled before installing XML 4.0 SP2.

  5. Install the ESRI software again if Step 4 was successful.

Related Information

Created: 1/19/2005
Last Modified: 6/30/2011

Article Rating: (3)
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By vwinig - 02/15/2015 9:04 AM

The article is incorrect or the solution didn’t work.


By JR_Andersen - 10/11/2014 3:19 PM

The article needs to be updated.

Relating to the "Error 1935: An error occurred during the installation of assembly component {303994BA-6487-47AE-AF1D-7AF6088EEBDB}. HRESULT:0x80070308" problem a fix (to another 80070308 problem" was posted in this forum thread: "Open an Elevated Command Prompt, and run the following commands REG LOAD HKLM\COMPONENTS C:\Windows\System32\config\COMPONENTS REG DELETE HKLM\COMPONENTS /V PendingRequired" Reboot, and try to install ArcGis Again

By arthur853 - 03/11/2014 6:27 AM

I would like to see a new article that discusses the topic outlined below.

I tried to install arcgis 10.2.1 but the following error message keeps appearing: "Error 1935: An error occurred during the installation of assembly component {303994BA-6487-47AE-AF1D-7AF6088EEBDB}. HRESULT:0x80070308" I have tried all the solutions to error 1935 but bone of them worked.


By Anonymous - 01/28/2011 7:14 AM

I have suggested related resources/links that can enhance this article. See below.

I'm using a fresh install (fully updated) of windows 7 and even with msxml 4 sp2 I still get the error.

By Anonymous - 09/17/2010 8:30 AM

The article contains a dead link.

I am still getting the same error after I followed the steps.