Hi @Panda666 ,
I suggest you go to this location and download the updates for Office 2013.
For conv2013-kb3172458-fullfile-x86-glb.exe:
https://www.catalog.update.microsoft.com/Search.aspx?q=KB3172458
For eqnedt322013-kb3162047-fullfile-x86-glb.exe:
https://www.catalog.update.microsoft.com/Search.aspx?q=KB3162047
Try to download this updates and install them, any updates please let me know, I'm glad to help you.
If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.