File extension changed when downloading mac

Select a Finder extension to make it available in the Finder. Photos extensions installed on your Mac, such as Markup. Select a Photos extension to make it available in Photos while editing photos.

Select the sharing extensions to include in the Share menu available from the Share button in the Finder and in many Mac apps. For example, you can use AirDrop to share a webpage in Safari, but not selected text. Select extensions that you want to access from the Quick Actions menu on the desktop, and in the Finder and the Finder Preview pane. The original file will still be open in the software program. Method 2. Open the Control Panel.

Click the Start menu, and then click Control Panel. If you're using Windows 8, click here. Click Appearance and Personalization. You can find this in the Control Panel. On Windows 8, in the ribbon, click Options. Make file extensions visible. In the Advanced settings list, scroll down until you see Hide extensions for known file types.

Click the box to uncheck it. Click on Apply , and then click OK. Open the Windows Explorer file browser to see the file extensions. Method 3. Select a Finder window or open a new Finder window. You can also click the Desktop to switch to the Finder. Open a new Finder window. The files will now show their file extensions. Method 4. Observe the location of file extensions. When you open a new Windows Explorer window, file extensions are visible. In order to change which program your computer uses to open a file, right-click on the file in the File Explorer and select "Open with Not Helpful 6 Helpful 8.

Go into the explorer, hit "View" and select "Show File Extensions", then rename the file you wish. Not Helpful 16 Helpful Files in general require an extension. Reply I have this question too I have this question too Me too Me too. All replies Drop Down menu. Loading page content. User profile for user: somanna somanna. Nov 2, AM in response to toxicmich In response to toxicmich Hey, I too have faced your problem today when the Lab where I gave my blood for testing sent me the reports as a.

Regards Dr. Reply Helpful Thread reply - more options Link to this Post. User profile for user: Gary Scotland Gary Scotland. Nov 2, AM in response to toxicmich In response to toxicmich First, try opening in Text Edit, any plain text in the file will show up and may give you some guidance Next, contact the originator of the file to find out what the file type should be so you can change the file extension as follows: I have this note from my filetype data base: A file with a.

Here, we will show you all the possible solutions, and you can try these until your issue is fixed. Before you follow the solutions, check if Excel is working normally.

Step 1. Loading Excel without templates and add-ins allows you to see if the program works as it should or if it is corrupted. Step 2. If Excel opens normally, check for any add-ins that are causing problems in Excel. Disable the add-ins and click on the "OK" button. Then, restart Excel to check if the problem is fixed. If not, move on to the fixes below. There are three useful solutions in total here to solve the Excel cannot open file issue. Besides, two methods are provided to recover Excel when the file format or file extension is not valid.

If the "Excel cannot open the file because the extension is not valid" problem is caused by file corruption and not by file compatibility, you need a professional file repair program to help you fix the problem.

EaseUS Data Recovery Wizard is an all-in-one tool that can help recover deleted files and repair corrupt files easily and efficiently. Go ahead and download the EaseUS MS Office document repair tool , then follow the step-by-step guides below to repair damaged Excel files in three steps:. Double-click the corrupt excel file, and this program will automatically repair corrupted and damaged Excel files. Click "Recover" to save the repaired Excel files to a safe location. Many times, this error occurs due to the incompatible file extension of the Excel file.

You can change the default file format for the corresponding Excel version to any other file format supported by MS Excel. Step 3. Then, Check whether Excel can open your file or not. The "Open and Repair" is a built-in easy-to-use MS Excel utility that allows you to correct the "Excel cannot open the file because the file format or file extension is not valid" error.

Start Office Excel. On the File menu or the Microsoft Office button, click "Open".