Robbbert wrote on 2026-01-25, 20:43:

Well, seeing that XP is so old and unsupported, there needs to be a program that simply removes the activation feature entirely, so that it "just works" all the time just like w2k and win9x.

Why? Just go for the corporate, after all that's XP Pro without all that activation stuff.

OM606 wrote on 2026-01-20, 16:32:

Why not install the VL version with no activation required? I've been doing that since 2006 and never had to activate XP ever since.

OM606 wrote on 2026-01-20, 16:44:

VL means Volume License. I't just a regular WinXP Pro with the only difference being the absence of everything related to the activation so you won't be bothered ever again with activation with this version. You can easily find the ISO on archive.org, amongst others. Actually, i never understood the reason for using anything other than XP Pro SP3 VL.

Ditto

ChrisK wrote on 2026-01-19, 13:02:

As rumors say MS did end the possibility for activation by phone entirely at the end of 2025, at least as long as you don't have an account at MS and can do it over some webpage, what's the options left?

It's no rumour, https://aka.ms/aoh is the URL and in truth it's much easier than phone activation ever was, the only downside is AFAIK you need a MS Business Account.

As I need to MS sign the SIV Kernel Mode device drivers I have one and have just activated Windows XP-x64 😀 then added Menu->Manage->Activate Windows for SIV V5.86 Beta-05 that links to the MS site.

Update: 01-Mar-2026 I just activated Windows 2003 x32 Enterprise Server and this time used my MS Teams account, it worked so I expect you don't need a MS Business Account 😀

Thank you, red-ray!
I've updated the initial post.

Yes, genuine purchased or OEM of license COA key stickers are the way to go for XP and 7. OEM computers that comes with XP home or Pro is another.

Cheers,

The phone activation algorithm "xp_activate32.exe" tool works a treat on fresh installs following the steps on xpforumsdotcom.

However, if you've done the reg edit method to activate xp with the edit OOBETimer key value set to - "ff d5 71 d6 8b 6a 8d 6f d5 33 93 fd" and you find after 60 days you've got the silly activation loop log in drama, which happened to me with a recent win xp pro 64 bit install. I did this to fix.

How i got this pc and a few others activated with the activate over phone xp_activate32.exe tool.
F8 select safe mode with command prompt.
Start windows explorer, in command prompt type, explorer.exe - hit enter
type in
rundll32.exe syssetup,SetupOobeBnk - hit enter.

Give it a few seconds and reboot.

It should boot normally now and have reset the darn OOBETimer for 60 more days....hopefully.
Then i went back into the reg edit (method) and the REG_BINARY value was STILL set to "ff d5 71 d6 8b 6a 8d 6f d5 33 93 fd" ...so, i changed it back to its original value.
"eb 54 8c c6 0e 45 17 59 55 5b f4 30". and reboot. (I took a screen shot of an original OOBETimer on a fresh XP PRO install before activating with xp_activate32.exe tool on said new install. )

After changing the reg binary value BACK to its original value and rebooting, i was now able to click on the activate windows through "start" - "all programs" - "Activate Windows"....it should be, right at the top in the first column and have it actually go into the "Lets Activate Windows" options screen.

Click "activate windows by phone" click "next". It should be saying "Generating new installation ID"
Run the xp_activate32.exe tool.
On XP's that had been re activating or getting caught in the darn activation loop but, that i had restored to the original reg binary value, when i clicked the "Get from the system" in the windows xp telephone activation tool window, i would get an error message!

I manually typed in that huge installation ID number(54 numbers) that had just been generated into the waiting "Installation ID" space (above the Confirmation ID) .
(Install ID 318342550435474483923874284253836411930450315426454030)
If you get the numbers in correct, (which a couple of times i didn't because....DJ dyslexic penguin) it should auto generate the Confirmation ID numbers. Clicking the "Store to system" gave me another error message! So i manually typed in the Confirmation ID numbers it gave me,
(Confirmation ID 077332-762861-993794-252011-169712-917074-640070),
..into the "step 4" boxes "A to G". If you get those Confirmation ID numbers correct, (which a couple of times i didn't because....DJ dyslexic penguin again) The little "Next" button appeared clickable down the bottom right corner and i was very very happy to see the "Activated" screen pop up when i clicked it!

Reboot, then to check that the activation has actually stuck, i went "Start" > "Programs" and now the "activate windows" button at the top should be gone which mine was!
Then i was curious to see what the reg binary value looked like now, when i got there the value had changed BACK to the manual reg edit method values i'd first changed to activate, and changed back to original pre reg edit method values.

I'll post some screen shots shortly for an Intel xp pro 64 bit install i fixed like this which kept telling me i need to activate xp and when i tried to activate, it kept telling me it was already activated countdown to lock out...

I Know this has been driving people all over the world nuts, including myself, but i hope this helps people if they find it.

The xp_activate32.exe tool worked perfectly on a pre legit activated AMD XP Home 32bit HDD PC i found and swapped that HDD to another AMD MB with better specs. On boot it wanted to be re activated and the "xp_activate32.exe" tool procedure went through with no error messages.

The two times i have tried swapping over Intel XP installed HDD's, they both chucked big hissy fits and would not even boot up in safe mode, then corrupted the OS maybe because the HDD would boot or repair when i put them back into the original MB's they came from. There was nothing important on them, so i just reformatted both for fresh install victory.

Update: 01-Mar-2026 I just activated Windows 2003 x32 Enterprise Server and this time used my MS Teams account, it worked so I expect you don't need a MS Business Account 😀

I read all the posts, but didn't see the easiest way, and I use it on a regular basis for XP builds.

UMSKT

ChrisK wrote on 2026-01-19, 13:02:

As the title may suggest I'm having a system running Windows XP for testing new old hardware. I've set it up and activated Windo […]
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As the title may suggest I'm having a system running Windows XP for testing new old hardware.
I've set it up and activated Windows with an official license by phone may be two years ago and could use it when needed. So far so good.
As I'm not using it very often it only now struck me that Windows wants to be activated again due to changed hardware (or whatever the reason is).
However, if I click the button "Activate Now" it keeps telling me that Windows is already activated and logs me off again just to repeat the game and show the "Windows needs to be activated" screen again at the next login attempt, effectively hindering me to login at all. So yeah, this is that.

Seems I'll have to reinstall it and then...

As rumors say MS did end the possibility for activation by phone entirely at the end of 2025, at least as long as you don't have an account at MS and can do it over some webpage, what's the options left?
I must say I haven't tried the classical way by phone yet again to see if that's correct, though, but imagining there are more poeple out there having the same "problem" I wonder what their solution is? For (legal) activation itself as well as the "WinXP as testing system screaming for regular re-activation" thing.

Edit:
As red-ray stated here this is the current link for online activation of MS products: https://aka.ms/aoh

Without reading all the responses I recommend reinstall after obtaining the phone activation app that gives the activation code and hasn't been blacklisted as "undesirable" yet unlike the key generators.
I just won't recommend OEM windows XP just retail pro..