I´m working on the migration for a CRM 4.0 on-premise system to CRM 2013 in which one of the most used features is the campaign module.Now I´m facing a problem with mail merge, when I try to distribute a campaign activity:

Dynamics Previous Versions Dynamics Previous Versions.Implementing Dynamics 365 Implementing Dynamics 365.Artificial Intelligence Artificial Intelligence.Dynamics 365 Products Dynamics 365 Products.Var installPath = instance2.GetInstallationPath() 32bit only discovery for now, remove this for 64bit too Public static ActionResult VSFindInstances2( Session session ) ' ) Private const int REGDB_E_CLASSNOTREG = unchecked((int)0x80040154) My question is anyone aware of situations like this or have pointers on how I can track down why this error is thrown? Wondering if there is some type of race condition that is causing this failure. The fact that it will run successfully the first time through, tells me it is not an obvious coding error.

I have tried debugging it and stepping into the code and it fails before it ever gets into the code. I've watched it using ProcMon and don't get any definitive results to point to a culprit. At first I thought maybe it was a file name clash. I have observed that the msi removes the temp file when it has completed. In troubleshooting I have narrowed the error down to when the custom action is invoked. The WixVSExtension never fails and it performs a similar function. The Wix project uses the WixVSExtension to search for VS2019 with its related folders and my extension fills the VS2022 void. This installer is per machine so the installer is running with elevated privileges. If the user uninstalls and runs again they will get an error dialog from RunDLL stating 'There was a problem starting ' and below that message is 'Access is denied'. The first time a user runs the installer it will complete successfully and all is fine.

The custom action is written in managed C# using an open source sample from Microsoft. It contains a custom action that searches the local system for installed versions of Visual Studio 20. Created an installer of a toolkit with a Visual Studio extension as part of it in Wix 3.14.

Act pro v17 mail merge error 80040154