Thank you for posting in the Community. Let me help verify if this has something to do with your browser’s cache. A cache holds the temporary internet files, but when it’s full, it may cause a non-loading webpage.
Let's try checking by signing in first to your QuickBooks using a private browser.
Here’s how to launch a private browsing session:
In Mozilla Firefox and Internet Explorer, press Ctrl + Shift + P.
In Google Chrome, press Ctrl + Shift + N.
In Safari, press Command + Shift + N.
If you can proceed to the next step in preparing your 1099 form, then you'll need to clear the browser's cache on your previous browser to start fresh.
However, if the same thing happens, I’d suggest using other browsers. This way, we’ll know if it does the same thing.
Please let me know what the results are, and I’ll get back to you as soon as I can.