Update failed. Could not move the old version to the upgrade-temp-backup directory

This is a very specific error that we have only encountered today.

We are still in testing for our system where we plan to sell sites to a niche industry using common theme and plugins that we’ve created.

We originally were testing 100% on a Linux server.  Now we are setting up test sites on a Windows server as well.

Today we pushed out a theme update and a couple plugin updates.  Everything updated fine on Linux.  The plugins updated on Windows.  However, when we try to update the theme on Windows, we get an error:

“Update failed. Could not move the old version to the upgrade-temp-backup directory”

If I manually upload the Zip file of the theme to the Windows site, it updates successfully.

I don’t believe this is a Hoster issue per se, but I did want to inquire to see if you have encountered this before with others using your plugin.

Thank you.

purchase_id:

64390