Cannot open *.csv and *.txt but excel files work from shared drive

Cannot open *.csv and *.txt but excel files work from shared drive

Cannot open .csv and .txt but  excel can open successfully files from shared drive using the Web Player.

- Could be caused if the "AllowedFilePath" tag is missing  from "Spotfire.Dxp.Worker.Host.exe.config" file.
- Or if using Kerberos with delegation, for excel files Node Manager service Account is used but for all other file the logged in user is delegated. Resolution 1:
- Check "Spotfire.Dxp.Worker.Host.exe.config" file if the below tag exists.
-----------------
<!--A list of paths determining which parts of the file system may be accessed by file data sources-->
      <setting name="AllowedFilePaths" serializeAs="Xml">
        <value>
          <ArrayOfString>
            <string/>
          </ArrayOfString>
        </value>
      </setting>
=======================

Resolution 2:
- While using Kerberos with delegation 
Confirm the logged in user has access to the share file folder.