Can't open file via cmd in Citrix session

Question

Some Java application try to open file for preview with windows user-default software (ex. notepad for .txt). To do this, jar use the launch line:

cmd.exe /c start "OPENNING_FILE" "\\Client\C$\Temp\test.txt"

But at startup I get an error - Access denied.

If i try run:

"\\Client\C$\Temp\test.txt"

Same error - Access denied.

But, if i run:

notepad "\\Client\C$\Temp\test.txt"

this working - no errors.

If i run this via powershell:

Start-Process -FilePath "\\Client\C$\Temp\1.txt"

this working - no errors.

How I can open file in cmd without specify launcher app?