After the Windows 10 update, Miktex refused to download new packages and kept signaling a Windows API Error 2. The worst part was that the uninstall file for Miktex was nowhere to be found, which made it impossible to properly uninstall it using Windows Program manager. On the machine’s Admin account, Miktex was not even reported in the Program manager anymore.

A simple and efficient fix that worked for me is to rename you current Miktex folder Miktex_old, install Miktex where the old install was and simply delete the Miktex_old folder, and that’s it !

This trick might also repair some of the other numerous bugs Miktex meets on a Windows system (especially 64bits).

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