Problem with Download Helper drop

When you access the drop corresponding to the type of file to download on YouTube I want, the type mp4 file no longer appears as an option. However, if I go to another site (for example, Wikipedia) and then immediately return to YouTube, the menu now shows the option of mp4 among others! Why is this happening now?

Have you tried the steps like these?

Reload Web pages and ignore the cache to refresh potentially stale or corrupt.

  • Hold down the SHIFT key and click the Reload button
  • Press 'Ctrl + F5' or 'Ctrl + Shift + R' (Windows, Linux)
  • Press 'Command + shift + R' (Mac)

Clear the cache and cookies only from Web sites that are causing problems.

"Clear the Cache":

  • Firefox/tools > Options > advanced > network > content caching Web: 'clear now '.

'Delete Cookies' sites causing problems:

  • Firefox/tools > Options > privacy > Cookies: "show the Cookies".

Tags: Firefox

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