How to open .XLSMHTML file extension?

If you cannot open a new file that has been saved in the .XLSMHTML format you need to download the appropriate software. The manufacturer of .XLSMHTML files is Microsoft; .XLSMHTML files belong to the Spreadsheet Files category. After downloading the application from the list available on our website just run an unknown file, and as the default set the newly installed application supporting the .XLSMHTML files. Activities performed in the order described should solve the problems with all the files in the .XLSMHTML format.

• What is .XLSMHTML file?
• How to open .XLSMHTML file?
• What is .XLSMHTML file?