Justin Alias,
ALWAYS had great results from Smart Defrag! Having been using it for years, with nothing but good results. Definitely makes file access faster!

JMenning, -- My mistake! The license code in the ReadMe file must be entered before the program becomes the Pro version. Upon restarting, the program declares itself to be 5.7.1 Pro.

Glendon Gray, that trick doesn't seem to work anymore. If you want to bypass the obnoxious forced social media sharing, you'll have to use the email option provided at the bottom of the popup.

(You can use a throwaway email address to avoid giving them your real email.)

Jim Stone, simple workaround. Share it to yourself then delete it.

TK, I've followed your suggestions and I'm happy to report that the space has gone up to 156 GB. I have disabled the system restore protection, deleted the previous restorations points, and enabled it again adjusting it to the minimum usage. And finally I've created a single restoration point, just in case.
I apologize because my lack of knowledge on this matter has made me write a bad review.

Paul269, good question!

I've just investigated this and the answer is yes it does work on external HDDs. You can either
a) right click the drive in File Explorer and select "Defrag by Smart Defrag" to work on just the one drive or
b) you can run the full program which then shows *all* your drives including the external drive.

I've also discovered that you can defrag a USB stick too! It probably deals with anything that shows up as a drive in Windows File Explorer, I would imagine. The drives appear/disappear dynamically in Smart Defrag's display as you attach/Eject them. I think this is good and helpful behaviour.

TK, please do not distress yourself. The program is not defragging my SSDs. As it happens I have switched off the automatic trim option as it has never made much difference to anything.

RCory, this appears to be the Pro version.

As far as I can tell from their website the non-Pro version is free anyway.
I guess a paid-for/licensed version = Pro.

The Pro version has a few extra functions. The differences between Free & Pro are listed at the bottom of the page here: http://purchase.iobit.com/aff/en/sd/aprnewlaunch/index.php?ref=cbssdtx&AFF=9996&__c=1

Nick, you are right, of course. This program, however, doesn't defrag SSD drives, it "trims" them. Trimming is the correct and safe way to do it.

It also handles SSHDs correctly by trimming the SS part and defragging the HD part. So I believe this program is safe for all three types of hard drive - SSD / SSHD / HDD. I have all of these and have had no problems with this software over the past 11 months of Pro ownership.

TK, one can easily turn off the program's SSD operations and just defrag regular HDDs if there are concerns about it being potentially harmful. Just untick/uncheck the relevant drives/s in the software interface.

You may be right with your concerns and right to raise them here for all to consider. I'm not a technician, I guess each user should perhaps decide for themselves what level of TRIMming they feel is appropriate for their situation. I was just trying to reassure the original poster that this software was able to work with an SSD by TRIMming it and could handle several disk types including newer hybrids.

I agree that six months is not great. ;-)

jj juice, I actually find this defrags better than the basic windows version. Win 10 also has a built in firewall and anti-virus, so I assume you don't need to use any third party software for those.

grange, I was an avid user of Auslogics Defrag Pro (paid version) for many years. It's just not needed in Win10 OS.
Despite the somewhat positive reviews of Windows Defender - the built in AV on Win10, I still prefer 3rd Party AV and also VPN

glnz, ANYTHING is better than the native Windoze tools.

glnz, I'm no expert but for what it's worth here is my opinion:

a) better because you have five options for how to defrag the drive (large files / free space / fast / defrag&optimise / defrag&prioritize). The Windows tool gives no options.

b) I have two SSDs and they seem fine. This program does not defrag them, it "trims" them. This is the correct and safe way to do it, I believe.

c) I think the answer is yes to this too. I have recently added a Seagate Firecuda SSHD drive to my system. I have watched this software at work - first it trims then it defrags so clearly it recognises both parts of the drive. As far as I can tell the drive is working just fine.

When I upgraded using this download it kept my old registration info. If you have more than 180 days left then don't put the new registration in.

Jerry, Thanks for that tip...I got it and your right it kept my old registration so I did n't lose any months regards from Thailand.