Although modern software and operating systems are now all 64-bits, the H&R Block software is still executing in 32-bits. I guess they will keep coding like this until the operating system forces them to go to 64-bits, which is when the operating system goes to 128-bits very soon. I only use this software because my prior tax filings are in it's proprietary format, which forces you to use their software.
I was disappointed in this year's (2021) tax software. It had a lot of glitches when I tried to file my taxes and told me to do unnecessary steps. I have used Block tax return for several years, but am seriously considering moving back to Turbo Tax.
Been using H&R for several years ... a.d every year links to one another. Pulling old PDF versions of filings is a challenge, but it works after a little bit of exploration. Thanks H&R!