ActiveX Automation Server Error 18351 on Deployed TestStand Target

Updated Jan 13, 2023

Reported In

Software

  • TestStand

Issue Details

After I deploy a working sequence to a target computer I am getting the following error message:

Error loading type library/DLL.
Error Code:  -18351; An error occurred reading an ActiveX Automation server type library Step 'Read Database Option - Construct' of sequence 'Get Database Options' in 'SequentialModel.Seq'
 

Solution

The error occurs when TestStand is having trouble accessing the Database activeX server. Here's a couple things to try: 

Navigate to Start » National Instruments » TestStand x.x » TestStand Version Selector. Select the version of TestStand you are trying to use (even if it is the only option) and click Make Active. This will re-register all the necessary activeX components. 

The activeX server for database is stored in the follow location:

C:\Program Files (x86)\National Instruments\TestStand 20xx\Components\Models\TestStandModels\Database\DBOptions\TsDBOptions.dll

If the version selector does not fix the issue, you can try following the steps to manually register the server . 
 

Additional Information

This error may also occur if you are not using a TestStand version suitable with the Operating System of your machine: ensure that you are using an Operating System reported in your TestStand version readme.

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