Nov 18, 2020 · For some reason, starting this Monday after a Windows Update (16.11.2020), my XLS Excel files are not opening. I'm not sure if the issue is that it is XLS and not XLSX. It could also be because the files are downloaded from the internet (my company's site).

Nov 3, 2017 · Hi, There are several ways to convert your Excel file from .xlsx to .xls format. Using the Save As function is the easiest way to convert your Excel file by performing the following steps: Open your workbook that you want to convert the format. Click File > Save As. The Save As dialog will display, specify a folder to place the new format of the file, and then click Save …

Hello,Other than searching in windows explorer for .xl how can I find all excel workbooks on my computer?I would like to save the results to a workbook with location and filename. Find the workbooks

Feb 1, 2024 · Hi I have an very important excel documentation with information regarding my entire life which all of a sudden does not want to open and is displaying the message : "excel could not open the file because the file format or file extension is not valid. verify that the file has not been corrupted and that the file extension matches the format'.

Jun 10, 2021 · Message says "file format or file extension is invalid" Both are files I have been using for quite some time before this happened two days ago. I haven't changed the names.

Aug 23, 2019 · 3- Convert xls to xlsx in a Windows 7 machine. The .doc to .docx worked with no issues however, when trying the .xls to .xlsx it ran on the Windows 7 box but did not convert anything? We need to .xls files converting to .xlsx and then deleting the original afterwards.

Sep 12, 2020 · XLSTart folder, Personal.XLSB, and Word Startup folder are all separate issues, albeit (very) loosely related: XLSTart Folder There is a default location, but you can direct it to be where ever you wish. File menu > Options command > Advanced option > General section: What links are you looking at? . Personal.XLSB You can use a file in XLStart folder to contain all of …

Dec 2, 2022 · This can happen when you do not have a default application selected for the file type that you are trying to open up which in this case would most likely be .xls. In such a scenario, you will have to open up your Windows settings menu to change the default application setting for the excel file type.

Nov 28, 2020 · Thank you for participating in the Microsoft Community, I am Skypper G. I am an independent advisor, let me help you with this Have you tried to open Excel app first and then the file from the app itself? Another workaround that could work is renaming the file from xls to xlsx. Note: before do that backup the original file to avoid possible ...

Mar 3, 2020 · "The file format and extension of ' [file].xls' don't match. The file could be corrupted or unsafe. Unless you trust its source, don't open it. Do you want to open it anyway?" This is a report I use frequently, and I know and trust the files. When I click yes, the file opens in protected view and I need to click to enable editing.