EFS problem, encrypted and reformat drive

  • Thread starter Thread starter Harold Stultiens
  • Start date Start date
H

Harold Stultiens

Hello,

I have a problem with an encrypted file system which I
created but then I reformatted my c partition and now the
sid is different. Is it possible to recover it with
another admin account somehow? I tried different things
but it won't let me decrypt it

any help is welcome

Harold
 
HOW TO: Remove File Encryption in Windows XP
http://support.microsoft.com/default.aspx?scid=kb;EN-US;308993

Without a backup of the original Encryption Certificate Key, encrypted files
are unrecoverable as they will stay encrypted forever. There is no recovery
method since the encryption algorithm is now completely different with a
reinstall of Windows XP.

See if the following articles help in any way:

HOW TO: Take Ownership of a File or Folder in Windows XP
http://support.microsoft.com/default.aspx?scid=kb;en-us;308421

Best Practices for the Encrypting File System
http://support.microsoft.com/default.aspx?scid=kb;en-us;223316

Encrypting File System in Windows XP
http://www.microsoft.com/technet/tr...chnet/prodtechnol/winxppro/deploy/CryptFS.asp

EFS Files Appear Corrupted When You Open Them
http://support.microsoft.com/default.aspx?scid=kb;en-us;329741

--
Carey Frisch
Microsoft MVP
Windows XP - Shell/User

------------------------------------------------------------------------------------



| Hello,
|
| I have a problem with an encrypted file system which I
| created but then I reformatted my c partition and now the
| sid is different. Is it possible to recover it with
| another admin account somehow? I tried different things
| but it won't let me decrypt it
|
| any help is welcome
|
| Harold
 
there is a way to do it or this quote from MS is
misleading "Several protections are in place to ensure
that data recovery is possible and there is no data loss
in case of total system failures" ... i am having a
similar problem myself and cant get it to work for me ...
yet.... but from the quote from MS there has to be a way
to recover
 
Hi * !

"4. EFS is very good at what it does and there is no back door.
Read and understand these links before using EFS to keep fro
permanently losing your data:
Encrypting File System in Windows XP and Windows Server 2003
Best Practices for the Encrypting File System"

(Quoted from one of the pages you've mentioned)



A couple of months ago we have rewritten a part of the SSH daemon (Ope
Source rulez :D). We had su privileges for one of the database servers
and in less than one hour we obtained the majority of the roo
passwords of the bigger servers on the university.

So don't tell me there's no back door.
The coding/decoding process always contains vulnerable parts. I'v
never dealt with EFS but I'm sure that it has weakpoints. If SSH2 had
EFS has much more.

I'll ask one of the folks here, who's a real Windows expert, hope tha
he knows EFS better than me :D.

Bye

Snipe

snipe
 
If you do not want to hear the truth when it suits your wants, I
suggest you not ask about a back door to EFS.
If you do, you will hear what you do not want to hear.

Eventually there may be an economical way out of EFS.
However for now, for all practical purposes EFS is unbreakable.

How much money and time do you have?
With current technology, you will need great amounts of each.
 
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