Support » Fixing WordPress » Can’t upload any media to multisite afer upgrade to 4.7.2

  • I just upgraded my multisite form (I think) 4.6.3 to 4.7.2.
    I am now unable to upload any media files on any of the sites – jpeg, png, pdf txt… nothing. I get the following error message:
    “Sorry, this file type is not permitted for security reasons.”
    The error log shows no problem at that time.
    I have disabled prop mime types plugin and installed the ‘Disable Real MIME Check’ plugin, but to no avail. I have wiped comet cache and tried using an icognito window in Chrome and switching to firefox, but it makes no difference.

    Any suggestions? Eeek! THis is why I’m always scared to upgrade WordPress – it hardly ever goes smoothly… meanwhile my clients are starting to call me up asking why they can’t update their sites 🙁

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