Hi--
Sorry, LOGic does not have the ability to change the default browser. Chrome, FireFox, etc. do not have the programmatic interface that we need to control the browser.
Does IE8 also fail if you go to the LoTW URL manually like you do in Chrome, or does it fail only when LOGic attempts to browse there? If it fails irrespective of LOGic, I would contact ARRL and ask them if there is some setting you can change.
Apparently you cannot update IE past 8 on XP....
Worst case you can do almost everything in LOGic without it talking to IE. Go thru the process, and when it attempts to upload, go to the TMP folder inside the LOGic install folder. The TQ8 file is there. Use Chrome or what-have-you to upload it.
http://www.hosenose.com/...ing-LoTW-and-LOGic.aspx
Tnx & 73,
Dennis WN4AZY