Being a regular user of Excel, you must have encountered several problems related with excel. The reason behind such situation is the corruption of excel files due to one or other reason like virus attack, power failure, incorrect system shutdown, application malfunctioning and more. And as a result of such problems, you will have to suffer severe data loss consequences.

One of the most ideal ways of recovering your lost data from such cases is taking the help of an updated backup for restoring your crucial data. But if you are not having an updated backup with you, then it becomes necessary to use third-party excel repair tools to repair the corrupted excel files and get all your data back.

In some situations, while you are trying to access or work with the excel files; you may come across the following error message:

“File format is not valid”

          

And you will find that due to the occurrence of this error, numerous workbook files will automatically open and the menus and toolbars are not found or visible. Thenafter, if you will try to paste the excel files into another application; you will encounter another error message:

Failed to create object. Check to see that program is registered.

After getting this error, you could not access your crucial data kept in the excel files. It has been found that registry issues are highly responsible for the occurrence of this error as the entries for older or current version starts conflicting with the current version of excel.

In order to resolve file format is not valid excel error; you will have to check for the present version of Excel that you are having on your system. After that you should rename all such excel registry subkeys that are causing problems for you. But, if this method does not helps you in resolving this error, you will have to use effective third-party tools which will successfully repair the corrupted excel files and recover all your lost or corrupted excel data. These tools employs highly sophisticated and advanced scanning techniques to recover the excel objects or files such as hyperlinks, tables and formulas and are compatible with almost all versions of Excel like MS 2003, XP, 2007, and 2000.