Fiddler keeps on crashing with the following error

 

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Awww, Fiddlesticks!
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Fiddler has encountered an unexpected problem. If you believe this is a bug in Fiddler, please copy this message by hitting CTRL+C, and submit a bug report at http://www.telerik.com/forums/fiddler.

VersionCheckFailed: Server Response Code = 502

Type: System.IO.InvalidDataException
Source: Fiddler
   at Fiddler.Updater.GetLatestVersion(Boolean includeBetaVersions, Boolean isEmergencyCall)

   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

   at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()

   at System.Threading.ThreadPoolWorkQueue.Dispatch()


Fiddler v4.6.2.3 (x64 AMD64) [.NET 4.0.30319.42000 on Microsoft Windows NT 6.1.7601 Service Pack 1]
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OK   
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A.

hi team, is there any way we can capture IIS w3wp process traffic in fiddler?

or traffic generating from a windows service.

I have Fiddler v4.6.2.2 on my one of the laptop which has German keyboard. To add a splitter I am using key combination shift + "=" as there is not direct key to enter "=" character. But this does not work. I have another personal laptop with US english keyboard having Fiddler v4.6.2.3 and I am able to add splitter by pressing only "=" key. 

Is there are way to add splitter for with non-english keyboard?

Although I have disabled update checks by setting the following registry keys I found earlier, Fiddler seems still to check during startup and throws an exception:

[HKEY_CURRENT_USER\Software\Microsoft\Fiddler2]
"CheckForUpdates"="False"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fiddler2]
"BlockUpdateCheck"="True"

---------------------------
Awww, Fiddlesticks!
---------------------------
Fiddler has encountered an unexpected problem. If you believe this is a bug in Fiddler, please copy this message by hitting CTRL+C, and submit a bug report at http://www.telerik.com/forums/fiddler.

VersionCheckFailed: Server Response Code = 502

Type: System.IO.InvalidDataException
Source: Fiddler
   at Fiddler.Updater.GetLatestVersion(Boolean includeBetaVersions, Boolean isEmergencyCall)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()

Fiddler v4.6.2.3 (x64 AMD64) [.NET 4.0.30319.34209 on Microsoft Windows NT 6.3.9600.0]
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OK  
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Hi,

i have installed the latest fiddler version on a Windows 10 PC. After that i have configured the ssl decryption, enable tls 1.1/ 1.2 and set the winhttp proxy settings. Traffic runs through fiddler but the Windowsupdate funktion runs only if i disable the proxy settings. I see that i getting many 408 Request.

Could some one help me?

CW O

Hi All,

I have recently downloaded Fiddler version 4.6.2.2 to try and capture traffic to identify why some federated services do not seem to be working on our network.

I found that when trying to capture traffic, nothing showed up.  Some initial investigation led me to this other post on the forum:

http://www.telerik.com/forums/fiddler-not-capturing-traffic

I can confirm that I am also potentially being blocked on the client due to proxy settings which are controlled by GPO.  Our proxy service, is a cloud based solution called Websense, which I have administrator access to.

What I would like to know is what kind of exception or settings will I need to put in the proxy to allow Fiddler to collect traffic?

Cheers,

Gordon

 

Hi,

 

Just a quick question, does Fiddler impact performance on servers. To be a bit more precise, having serious issues on a setup using a 3 server NLB setup. Was wanting to run Fiddler on all 3 servers, would this have an impact on performance?

Thanks

Sam

I have an intranet web app that runs over HTTPS and needs to access a third party web service that listens on localhost:8080.  Problem is the web browsers are cancelling the AJAX call to the localhost web service as they deem it as "Mixed-Content".  Can FiddlerCore be used to act as an HTTPS server that is hosting the web service at localhost:443 and forward the request to localhost:8080 and relay the response? 

By default, do fiddler core have filter settings?

Does Fiddler core have default filter settings on?

Could you please provide code snippet to off filter settings for fiddler core?

I am using Fiddler to analyze XHR calls an Angular web app makes. In one particular case, the HTTP request to the server completes in one second, and in response to the XHR.onload event the client code performs a long-running operation (that takes, say, 10 seconds). When streaming is not enabled, Fiddler correctly reports a ServerDoneResponse time as being one second after FiddlerBeginRequest. When streaming is enabled, however, ServerDoneResponse is 11 seconds after FiddlerBeginRequest, i.e., Fiddler is including the time the client takes in response to XHR.onload. Is this a bug in Fiddler, or is this somehow expected behavior? For what it's worth, Chrome's dev tools network tab seems to have the same problem, in that it includes the time taken in onload when reporting how long the request took. Interestingly enough, Chrome's timeline tab does not have this problem - it correctly reports how long the request took.