Notes about the TSS file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The TSS file type is primarily associated with 'Complete Works' by Toplevel Computing. The Complete Works product appears to no longer be offered or supported.
Detailed information for file extension TSS:
File classification: Spreadsheet
Other applications associated with file type TSS:
Important: Invalid file associations could be the result of underlying issues within your Windows PC. It is highly recommended that you scan your PC for invalid registry entries, unused processes and other slowdown issues.
Technical data
To view technical data on file-extension TSS
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ProgramID: MS-ITSS File
EXEFile: %ProgramFiles%\Internet Explorer\iexplore.exe -nohome ms-itss:%1::/
ProgramID: Power Voice.TSS
EXEFile: %ProgramFiles%\Power Voice II\Bin\Bin\PVManager.exe