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Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

How do I open a nightly file as Excel? It used to be excel until I accidentally clicked open as Nightly and now I can't convert it back.

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I tried opening an Excel file but chose to open it as Nightly. Now the icon for the file shows it as Nightly but won't open my file.

I tried opening an Excel file but chose to open it as Nightly. Now the icon for the file shows it as Nightly but won't open my file.

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Is the problem with a file you are downloading, or a file already saved on your computer? Does the file have the .xls or .xlsx or .csv extension, or something else?

(1) To change how Firefox handles a download, you can edit your preference here:

orange Firefox button (or Tools menu) > Options > Applications

If you find any entries for Excel or Comma-separated or CSV, you can use the drop-down list on the right to re-associate the download with Excel, or ask you every time.

(2) To change how Windows launches a document, I am familiar with where that is in Windows 7; yours may be similar.

If you open the control panel to Programs > Default Programs > Make a file always open in a specific program, you can find the file extension of the files that have the problem, select that line, then change the program.

Any luck?