Even though my commercial web host has a max file size upload limitation of 200kb for IIS/ASP, I tried this extension by setting its max file size to 3000kb and successfully uploaded images that were nearly 2MB in size. Page 58 of the manual tells how to increase the file size setting on IIS, but that’s not possible using a commercial web host. So I'm confused. How was I able to upload files larger than 200kb? Does this extension's script bypass the host's IIS/server’s max file size setting and use the extension's setting instead?

Hello,
The Pure ASP Upload 3 limits cannot override the limits set on your server. If your server limits the file uploads to 200k, then even if you set 5000kb limit in Pure ASP Upload 3 settings, you cannot upload files bigger than 200kb.
Please check your server settings.

Well somehow, I succeeded in uploading images between 1MB and 2MB - even two at a time. I've put in a support ticket with my web host asking (again) what their server limit is on file size. We'll see what they say. This is a huge public web host providing shared hosting, so there is no way I can check and/or change their IIS settings.

Question to my web host:
"My website is built with classic ASP. I was told some time ago that the maximum size for uploading image files is set to 200kb through your IIS/server. Does this limit apply when uploading image files from my website using a form tied to ASP script that allows file sizes larger than 200kb?"

My web host replied:
"The maximum upload file size through script in Windows platform is 5MB . However if you experience any issue with uploading 5MB files through your scripts then please get back to us with the scripts so that we can investigate further."

So actually the file limit on your server is not 200k but 5MB you can limit this in the PAU3 Settings if you need.

I guess it is! Years ago, a technician from my web hosting company told me “The 200KB is the max allowed [through our server]. We cannot go any higher than this. If you do need to have this set higher you may want to consider purchasing a VPS to allow that setting to be set higher.” Thus, my confusion!

FYI, a third technician told me 100MB was the limit. Since three different answers were given by three different techs, I asked that they double-check with top tier support and they reconfirmed that 100MB was their max limit for file/image uploads. That's way better than I ever expected and am going with it, but OH what a challenge it's been!