KB262566: "Dashboard Startup Error #2028" error appears when opening an MHT file created by exporting a dashboard from MicroStrategy Web 9.4.1 and 10.x

SYMPTOM:
After exporting a document or dashboard from Strategy Web 9.4.1 or 10.x to Flash, or sending it through Strategy Distribution Services 9.4.1 or 10.x, users receive an *.mht file. When the users attempt to launch the .mht file in Internet Explorer, they encounter the following error:

Dashboard Startup
Error #2028

• Following steps 1-4 from KB30398 regarding configuring Adobe Flash security settings have been shown to workaround this issue in some cases for end users with Adobe Flash Player 19.x installed. These steps should be followed on every end user machine that has this unsupported version of Flash.

Or

• In Strategy Developer, select the project which contains your document or dashboard you would like to export to Flash and navigate to Project Configuration > Project definition > Export Settings. From the Export to Flash file format option, select PDF, like shown below:

Restart the web server for the change to take affect, then export the document or dashboard to Flash. The document or dashboard will be downloaded as a PDF file. Launch the PDF file in a supported PDF viewer (e.g. Adobe Acrobat Reader 11.x) and observe that some Flash functionality is retained. The minimum version of Adobe Acrobat Reader required for Flash functionality to be retained is Adobe Acrobat Reader 9.2.
 
Follow the following instructions to find the version of Flash Player being used on a machine
1. Navigate to "Manage add-ons", like shown below:

2. Locate the Version under Shokwave Flash Object section:

 
Third Party Software Installation Warning:
The third-party product(s) discussed in this technical note are manufactured by vendors independent of Strategy. Strategy makes no warranty, express, implied or otherwise, regarding these products, including their performance or reliability.
 
Internal Reference number US29674