v4.4.6.1 64-bit Win8: https decrypt is not working

[Alexander]

Just updated to a new version and things immediately broke.

HTTP/1.1 200 Connection Established
FiddlerGateway: Direct
StartTime: 16:06:22.198
Connection: close

fiddler.network.https> Failed to secure existing connection for www.google.com. The specified network password is not correct.
.

[Brandon]

I am having the SAME issue!  I have been at this for the past 24 hours.  Did you ever find an answer?

[Brandon]

This is the RAW response trying to go to https://www.gmail.com:

HTTP/1.1 502 Fiddler - Connection Failed
Date: Wed, 26 Feb 2014 16:39:28 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
Cache-Control: no-cache, must-revalidate
Timestamp: 10:39:28.659

[Fiddler] The socket connection to www.gmail.com failed.  <br />Failed to negotiate HTTPS connection with server.fiddler.network.https&gt; Failed to secure existing connection for www.gmail.com. The specified network password is not correct.
.                                                                                                                                                                                                                                                                            

[Alexander]

No. I found an older version setup file and using that for now.

[Brandon]

What version and where?

[Alexander]

On my other machine in the Downloads folder :)
This one works fine.

Fiddler Web Debugger (v4.4.3.8 beta)
Built: Thursday, April 11, 2013

64-bit AMD64, VM: 68.00mb, WS: 105.00mb
.NET 4.0.30319.18449 WinNT 6.2.9200.0

[Alexander]

This one is also OK:
Fiddler Web Debugger (v4.4.4.8)
Built: Friday, June 14, 2013

[Brandon]

4.4.5.6 seems to work too

[EricLaw]

"The specified network password is not correct." means that Windows managed to lose track of the CA certificate's private key.

Your first step should be to disable HTTPS decryption, click "Remove interception certificates", accept all prompts for removal, then recheck the HTTPS decryption checkbox.

[Brandon]

I tried that like 12 times. Even tried to uninstall certs, verified they were gone, and even uninstalled application and reinstalled it without any luck. I installed older version and finally got it to work. 

[Alexander]

Same as Brandon. Removed certificates multiple times. In the end the older version works fine, so there's definitely something going on with the latest version. Might not be affecting everyone, I guess we're are the "lucky" ones.

[Brandon]

I'm using windows 8.1 x64.  I haven't found anyone using windows 8.1 with the newest fiddler with success yet. 

[Alexander]

Not even 8.1 here:
OS Name: Microsoft Windows 8 Pro
Version: 6.2.9200 Build 9200
System Type: x64-based PC

[Eric Lawrence]

Please understand that Fiddler is currently developed on Windows 8.1, and it is tested on Windows 8, Windows 7, and Windows XP. Thousands of developers at Microsoft run Fiddler on Windows 8 and later versions every day.

The default certificate generation in Fiddler has not changed in approximately a year, and is identical between Fiddler 4.4.5.6 and the latest build (4.4.6.2).

If behavior has changed on your system, it's not due to changes in Fiddler's certificate generation itself.

The message "The specified network password is not correct." would be from the Windows cryptographic APIs when they fail to retrieve the private key associated with a certificate.

If you haven't tried it yet, you might consider checking whether you have the same issue when the Fiddler CertMaker Add-on is installed (http://fiddler2.com/r/?fiddlercertmaker). This add-on generates and uses certificates without using the Windows APIs, and thus should be less likely to encounter the sort of problem described here.

[Brandon]

I installed plugin removed all certs.. restarted app..  turned on decrypt again..  restarted app (just to make sure it took settings).  I am getting same error and in a browser it doesnt load the page.

Under the cert generation tab (https) it "A Certificate generating plugin is loaded".  Says the certificate generated using: CertMaker.BCCertMaker.

Any other suggestions?  Do you think there is something else in the certificate causing this to fail that Alexander would have as well?

[Brandon]

I installed plugin removed all certs.. restarted app..  turned on decrypt again..  restarted app (just to make sure it took settings).  I am getting same error and in a browser it doesnt load the page.

Under the cert generation tab (https) it "A Certificate generating plugin is loaded".  Says the certificate generated using: CertMaker.BCCertMaker.

Any other suggestions?  Do you think there is something else in the certificate causing this to fail that Alexander would have as well?

[Brandon]

Is there a list of all registry keys or anything else that might have been left behind that is causing issues?  Any certs I need to make sure are not conflicting etc.?

[Brandon]

Any other suggestion?  Alexander and more luck?

[Alexander]

No. Just using old version. If I can't convince author that there's an error with the application there's not much left to do.

[EricLaw]

Here are all known troubleshooting steps for Windows' certificate and private key storage errors: http://fiddler.wikidot.com/certfix. If these don't resolve the issue, then I'm afraid that only Microsoft Support is likely to be able to help you. (Short of watching things in Process Monitor and hoping to see something amiss).

[EricLaw]

FYI: Further research indicates that the problem here is probably a bad ClientCertificate.cer file on the PC in question. See https://groups.google.com/d/msg/httpfiddler/xEOcJItep9A/mJMYA-185mYJ for details on this.

[Brandon]

Thanks for following up.  I ended up rebuilding my laptop which "fixed" it.  Glad the solution was found! Cheers

[Alexander]

Followed the same route - rebuilt the PC and latest version is working fine. /shrug

[parth]

Hi All,

I would like to share the issue and resolution which works for me
I was using fiddler version--v4.6.3.50306 and suddenly it was NOT caputering Https traffic and it shows error in ***fiddler Inspector*** tab as below -:

Error Description -:

"Https handshake to server-xxxx.com is failed.
System.Security.Cryptography.CryptographyException.The Specified network password is not correct"

I do below things to solve the issue
1)Reset all certificates under Tools-->Fiddler Option-->Https-->Action button-->Reset all certificate
But it does not work.

Then after 3 frustrating days below things RESOLVED my issue-:   :)
1)Open registry
2)search all entries with word "fiddler" and "eric" also
3)Delete all registry files
4)Restart machine
5)Install fiddler again with admin prvilege
6)Restart machine
6)Now it start capturing Https traffic and also decrypting.

Hope this helps to you.

Thanks,
Parth Shah

[Boyan Boev]

Hi Parth,

Thank you for sharing your knowledge with our community.

Regards,
Boyan Boev
Telerik by Progress