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Fiddler Wont Install: Says it is running

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Windows
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Jacob
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Jacob asked on 08 Nov 2017, 08:48 PM

When I try to runt he Fiddler installer I get an error.

After agreeing to the EULA and specifying an install folder I get an error that says:

"A Progress Telerik Fiddler component appears to be running. Please, close all Progress Fiddler-related applications and try again."

I am not currently running Fiddler. I don't know how to look for what is considered "related."

--Jacob

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Simeon
Telerik team
answered on 27 Nov 2017, 02:58 PM
Hi,

Sorry for the late reply, could you please confirm that either Fiddler or Fiddler Script Editor is not running and not being used by other programs while you are trying to run the Fiddler installer.

Regards,
Simeon
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Richard
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answered on 21 Dec 2017, 10:19 AM

If it helps, I had the same problem on Windows 10. Solved by running the downloaded installer with 'Run as Administrator'.

Autoupdater just appeared to be running as non-elevated, so wasn't able to replace some files.

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Deepak
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answered on 19 Jun 2018, 01:29 PM
fiddler-update-error.png

hi,

I am trying to update fiddler and getting error "A Progress Telerik Fiddler component appears to be running. Please, close all Progres Telerik Fiddler-related applications and try again."  I don't have any thing running and still getting the error.

I am trying to update Fiddler from Update Announcement (From v5.0.20173.50948 to v5.0.20181.14850).

Attached error png for your reference

 

Appreciate your help

Thanks,

Deepak

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Simeon
Telerik team
answered on 25 Jun 2018, 10:04 AM
Hi Deepak,

For some reason the installer is unable to write the Fiddler.exe file. Make sure that you have write access for the installation folder.

Regards,
Simeon
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Deepak
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answered on 03 Jul 2018, 09:48 AM

Hi Simeon, 

Thank you for your reply. Very sorry for the late reply.  I am administrator on my laptop (windows 10) and also running the updater in Administrator mode. I have full access to the Fiddler.exe folder.  I am still running in the same issue.  I am also not able to uninstall Fiddler due to error "A Progress Telerik Fiddler component appears to be running".  I did checked the task manager and found nothing running.

Appreciate any help

 

Thanks,

Deepak

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Simeon
Telerik team
answered on 03 Jul 2018, 02:56 PM
Both the installer and the uninstaller try to copy or delete the Fiddler.exe file. For some reason they are unable to do this on your computer with your admin account.

Could you, please, try to delete the Fiddler.exe file manually and then run the uninstaller and after that the installer.

Regards,
Simeon
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Deepak
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answered on 03 Jul 2018, 04:38 PM

Thanks Simeon.  I managed to resolve this my starting Windows 10 in Safe Mode. This allowed me to uninstall Fiddler successfully. 

Regards,

Deepak

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Jacob
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Simeon
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Richard
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Deepak
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