My data.dat is also has different size. It's 52KB (size on disk). I Upgraded W8 from W7, activated with KMS server, add WMC and activated again with free WMC key.
Ok my findings... windows pro activated KMS = 11kb Windows Pro activated Kms with WMC added and activated = 20kb Windows Pro activated Kms with WMC added plus office pro retail = 29kb
mdc: seeing all these datas I think I have to give you more details: actually my win8 was first KMS activated from the first leaked Russian host in Aug., then later MAK-activated, I also have a MAK-activated Office 2010. As for my friend, he is MS guy, but I don't believe he gave me the data.dat from his personal key win8(not a chance LOL ), these guys have their resources.
Oh Christ, this is getting more and more messy haha. I'm gonna install Windows 8 and KMS activate it, then install WMC and capture the data.dat before activating. I don't think Office 2010 touches SPP; instead it uses its own store located here: C:\ProgramData\Microsoft\OfficeSoftwareProtectionPlatform\tokens.dat, so I think we can assume 24kb for KMS + MAK, or possibly MAK by itself. Any volunteers to do a clean install with their MAK key? I'm hoping KMS + WMC (unactivated) comes out at 18kb, as that would explain ambidav's size, with an additional 2kb post-activation to match Nick's. If you could attach your .dats that'd be great Nick, as then I can hex compare them and see which pattern KMS follows; mine or FaiKee's.
Mine: Upgrade Windows 7 ultimate to Windows 8 Pro, activated Kms,added WMC + office 2013 pro retail = 52kb. I'll do another installation with different method when i have time and i'll report later
Ouch, that's huge lol... I'm guessing 2013 added quite a bit to that, as it uses the SPP store as well.
I found my data.dat file with a size of 19kb using enterprise KMS activated and office 2013 with technet key on 32 bit version and same size on a 64bit machine. On another 64 bit machine, I activated 8pro with a MAK key and find a size of 16kb
can i replace the data.dat with my own? is it the one activated with kms or after activated with WMC?
I don't think size matters LOL - Correct me if i'm wrong but I think the OP wants to compare the data in dat file So perhaps just upload and name it like KMS+WMCx64 or Upgrade+WMCx86 or something... *Attachment Removed* (Had 5725 views LOL)
Right, here's an interesting little bit of information; I installed Windows 8 Professional x64 from the upgrade ISO twice, both times using the KMS key, activated both times using the same public server, and both times resulting in a (roughly the same) sized store.dat of 11kb (11,040 bytes and 11,072 bytes). The contents of the files are completely different. There are, however, the common markers throughout the extent of the file which I noticed previously with both FaiKee data.dat files. It seems that the encryption of the file is ridiculously complex, and could take any number of factors into consideration; hardware ID, timestamp, products keys, etc etc. It would make sense, as this file (along with tokens.dat) controls your activation status, and is so central to SPP in general. The one thing which seems pretty clear, however, is that the more steps in your activation, the larger your data.dat file. With this in mind, I've collected a 14.5k (14,864 bytes) data.dat file, created by installing using the generic ProVL serial, activated by KMS, and then installing ProWMC using the generic ProWMC Retail serial. If this works, it should provide the least trackable method of doing a clean install of ProWMC using the free keys.
This does not work. When you upgrade to WMC with the Retail key, the necessary data isn't inserted into data.dat that would allow it to accept WMC upgrade keys. So far, it seems the only way to obtain a data.dat that does accept WMC upgrade keys is to apply an upgrade key to a Pro without WMC. I have tested this several times. I would also prefer a "clean" data.dat, but so far have not been able to find a way to generate one that accepts upgrade keys.
... crap. Well I suppose I'll find out for myself in about 8 minutes, just copying the sources to the USB stick now haha.