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Hi,
we've encountered error in subject of this post continued by:

"0 - A certificate chain could not be built to a trusted root authority.

ISSUER: CN=GlobalSign RSA OV SSL CA 2018, O=GlobalSign nv-sa, C=BE

This warning can be disabled by clicking Tools -> Options."

This seems to be problem with local certificate store on client computer? Not neccessarily Fiddler issue.
Using Windows 7.
How do we proceed?

Drazen
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 asked on 01 Jun 2021
3 answers
187 views
I have a simple problem and hopefully it has a simple solution. I want to limit the speed for an online game, namely Roblox. I edited the line under if (m_SimulateModem), which works great for webpages, but it didn't slow down the game. Is it possible to limit the speed for online games using Fiddler? I believe Roblox uses UDP for communication, so can I edit something to slow UDP communications?
Anna
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Iron
 answered on 27 May 2021
13 answers
1.6K+ views
I am trying to do some tests on a dotnet application. However some requests are present in wireshark but not in fiddler?
Anna
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Iron
 answered on 27 May 2021
0 answers
537 views

Hello Filip again, so im playing around with fiddler on League of legends and i get this error when i change some of the value, is there any fix>?

and one more question, so this is the league of legends shop

and now i lost the 6300 Blue essence is there anyway to bug or glitch the shop so it doesn't take any blue essence?

From Filip

Filip
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 asked on 20 May 2021
1 answer
517 views

Hi,

Is there a way to handle Modern Authentication with fiddlercore? 

Thanks,

Nick Iliev
Telerik team
 answered on 20 May 2021
1 answer
1.9K+ views
Hi,

We are using Fiddler Classic with the CertMaker for iOS and Android extension. We made sure to "Reset All Certificates" through Fiddler and double checked if there were any leftover in the certificate stores (user and machine).

After installing the certificate created by CertMaker for iOS and Android, we are getting errors on mobile saying the certificate is invalid. We checked the certificate, and it has a lifetime of 10 year, while in Fiddler, it says it has a lifetime of 2 years.

Screenshots attached. Is there a regression in the CertMaker for iOS and Android?
Nick Iliev
Telerik team
 answered on 20 May 2021
1 answer
381 views
I capture traffic and dont see javascript file, then i enable troubleshooting mode and see js file is hidden but i don't use fitler and comment is: "Hidden due to true."
Nick Iliev
Telerik team
 answered on 19 May 2021
5 answers
1.5K+ views
Hi Eric -- Thx a lot for a great product and I have been using this close to a decade. 

I have seen this issue and I thought try to figure out what's going on, is this a bug or a somekind of security feature that this page invented (sorry this shows up in one of the application and am not able to get you the direct url, so I thought capture it -- but I can save the response if you want). Thx.


http://screencast.com/t/zimnTCx2V

Doc
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Iron
 updated answer on 17 May 2021
4 answers
587 views

Hi guys!

I love fiddler and it works great to debug my android apps! :-)

It works for me, if I enable the default android proxy settings. But I am searching for an option to use proxy authentication and an option to route only traffic of my specific app to the proxy.

My android settings don“t allow adding proxy authentication settings (missing username and password in the settings). So I tried about 10 different proxy apps, e.g. drony, postern, "proxy manager" and "PowerTunnel for Android"

But if I am using an app with the fiddler proxy the https connection fails. Can you describe why?

Or can anyone tell me an working android app to add proxy authentication? Additional an app which can only route the unique apps traffic (like drony).

 

Doc
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Iron
 updated answer on 17 May 2021
1 answer
127 views

I work in windows with the program that starts and controls the chrome-based browser.

Fiddler can display all the traffic from that browser, but I want to explore the commands that are sent to that browser to control it (for example open URL, make a post query, etc).

Fiddler doesn't display such commands.

But using ieinspector HttpAnalyzer I can see that the browser is controlled by the chrome devtools at localhost:54909 and websockets ws://localhost/devtools/page/HASH 

How can I explore all that information in fiddler?

Nick Iliev
Telerik team
 answered on 17 May 2021
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