Preventing TMP files from remaining on external drives

Copper Contributor

After the Excel update back in the fall of 2021(?), a temporary file (tmp) was created and remained on any external drive to which I saved the Excel file.  This NEVER happened before that update.  No tmp file is created on my computer drive, but only on my external drives.  I've tried looking for the setting I need to change in order to stop this from happening, to no avail.  I've even sent emails to Microsoft Office, but have not received any replies.  Also, many of the tmp files will not let me delete them, indicating I must have administrator permission to do so.  I am the only one using this computer, and I am the owner of it and all of the external drives.  Any suggestions on how I may resolve these two issues?  Thanks in advance!

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