question

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ErikssonIsabelle-7897 asked JohnKorchok commented

Open old formats

Hi,

for how long can I open files in these formats: xls, xlsx, doc, docx, pdf, msg, bmp, txt, csv, mht, eml?
Are there any links about the subject? If I would like to open an old xls file, do I have to install an older Excel version to my computer?

Thanks in advance!


office-excel-itprooffice-word-itpro
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JohnKorchok answered emilyhua-msft commented

xlsx and docx are the current Office file versions. There is no end date that has been set for opening those files in Office.

pdf, msg, bmp, txt, csv and eml are long-standing formats with no proclaimed sunset date for their useage.

Only xls and doc are old formats. Some of those versions are, by default, not openable in modern versions of Office. However, in any Office program, you can choose File>Options>Trust Center>File Block Settings, uncheck all options and still open most of those files. Only Office files from the early 90s or earlier may not be openable in modern versions of Office due to security concerns. For those, a copy of Office 2003 should be able to open very old files.

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@ErikssonIsabelle-7897
Please refer to JohnKorchok's reply.
If you have other questions, please feel free to let us know,

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ErikssonIsabelle-7897 avatar image
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ErikssonIsabelle-7897 answered JohnKorchok commented

Thank you for the answer! Do you happen to have any references to material that back this up? :)

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Just 30 years of professional template creation in Microsoft Office and 10 years of answering online questions about it.

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