Remote Assistance Send a File "Out of memory" and "File transmissioncancelled "

Sometimes in Remote Assistance when I go through the steps to "Send a
File," the sender gets the message: "Windows Internet Explorer: Out of
memory," and the recipient gets "File transmission cancelled by [name of
sender]."

I haven't figured out the pattern, but so far it seems to happen with
small .txt and .htm files. I opened a small .txt file, copied all its
text, pasted it over and over many times, and saved the file, and that
new file was sent with no problem. The same happened with an .htm file.
So far, I've only been able to try this with two computers connected to
a router, which is connected to the Internet.

Anyone know why this might be happening, and how to fix it?

Thanks.
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