How to register DAO360.dll or a dll file?

Product(s): SewerGEMS, SewerCAD, StormCAD, CivilStorm, WaterGEMS, WaterCAD, HAMMER
Version(s): and (for Storm and Sewer products); build,, and (for Water products)
Area: Installation


How to register DAO360.dll or a dll file?


The steps below will help to register the DAO360.dll file. This is sometimes needed in cases where an error is encountered when opening a Hydraulics & Hydrology product or model file, with the details of the error mentioning "engineeringlibraries".


Method 1

The following command can be run from a command line window or Start Menu > Run window. It is important to use correct punctuation and capitalization. After typing it in press enter.



In a 32 bit machine:
regsvr32 "C:\Program Files\Common Files\Microsoft Shared\DAO\DAO360.dll"

In a 64 bit machine:
regsvr32 "C:\Program Files (x86)\Common Files\Microsoft Shared\DAO\DAO360.dll"

After typing the above command, press Enter and a message similar to the following will be displayed:

Method 2

  1. Browse to the dao360.dll file.
    1. (Windows XP) C:\Program Files\Common Files\Microsoft Shared\DAO\
    2. (Windows 7) C:\Program Files (x86)\Common Files\Microsoft Shared\DAO\

  2. Right click, choose to "open with", then browse out to and open it with the regsvr32.exe file, typically located in C:\Windows\System32\.

Now try opening the program and see if the issue is resolved.

Other Options

If you still get the error, try the steps in this article.

See Also

"Error in the Application" error message when opening existing model file