Errors during conversion xmcd files to Prime

[SatishM]

I am using Mathcad Prime 7.0 7.0.0.0.
Our first installation of MathCad Prime is installed on a Windows10 client. We want to open our xmcd files (from MathCad15 M050) and see how the layout/formula's looks like in Prime.
Because we can't open MathCad files (xmcd) directly in Prime, we have to convert these xmcd files first before using in Prime.
When using the Conversion option in Prime, we get the following error:

Exception data:
System.Runtime.InteropServices.COMException (0x80040CB6): Unknown Error
at mcautomation.IMathcadWorksheets.Open(String pFileName)
at ConverterLoader.XmcdToMcdxConverter.StartConverting(String originalFileName, String destinationFileName)
at ConverterLoader.XmcdToMcdxConverter.TryConvertWorksheet(String originalFileName, String destinationFileName)
at ConverterLoader.XmcdToMcdxConverter.ConvertWorksheet(String originalFileName, String destinationFileName, String mathcadVersion)

We've tried several files, but none of them we've managed to convert to Prime.
We could use some help to solve this.

[VladimirN · Accepted solution]

1. Here is the solution from the article - "Error to specific user "Conversion failed. User could not start Mathcad conversion process" while converting legacy Mathcad 15.0 worksheets in Mathcad Prime": https://www.ptc.com/en/support/article/CS103001 

Or this tip - "Error "Conversion failed. Could not start Mathcad conversion process"": https://community.ptc.com/t5/PTC-Mathcad-Installation/Error-quot-Conversion-failed-Could-not-start-Mathcad-conversion/m-p/707518#M49 

2. Please attach your Mathcad worksheet here.
3. What does your worksheet contain?

[SatishM]

Hi VladimirN,

The solution for me was to set the option "Run this program as an administrator".

Thx!

[VladimirN]

I'm glad you solved your problem.