Could not find file 'C:\Users\username\OneDrive\Documents\Fiddler2\CustomMimeMappings.xml'.

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Fiddler Classic
Martyn
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Martyn asked on 16 Jun 2021, 08:48 AM

Installing fiddler and and first start receive the error unable to create following file :

the file never gets created

I've check one drive permissions and I have full permissions. Any  yes using OD4B

Is there a setting to change the location of the CustomMimeMappings.xml', I presume its one drive causing the problem

 

Thanks

M

 

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Generating default MIME mappings file failed
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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.

Could not find file 'C:\Users\username\OneDrive\Documents\Fiddler2\CustomMimeMappings.xml'.

Type: System.IO.FileNotFoundException
Source: mscorlib
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)

   at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)

   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy)

   at System.IO.FileStream..ctor(String path, FileMode mode)

   at Fiddler.frmViewer.š(Object , EventArgs ) in C:\Jenkins\Fiddler_Windows\workspace\Fiddler2\Fiddler.Shared\Viewer.cs:line 9948


Fiddler v5.0.20204.45441 (x64 AMD64) [.NET 4.0.30319.42000 on Microsoft Windows NT 10.0.18363.0] 
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OK   
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Nick Iliev
Telerik team
commented on 16 Jun 2021, 09:23 AM

The error indicates that the file is missing for some reason, which could happen due to missing access rights to access the folder or for similar reasons. I've noticed that your Fiddler folder is located in a Jenkins folder which leads me to believe that you are probably using a per-machine installation. If the above is correct, then you could try to install Fiddler per machine (by default, it is installed per user) as described in the following threads:

 

https://www.telerik.com/forums/default-install-path#4820665

https://feedback.telerik.com/fiddler/1441442-default-install-fiddler-for-all-users

 

Note that the Fiddler Classic application is originally not meant to work with the per-machine installation. Therefore, after going through the custom installation setup, you should verify that all needed functionalities are working as expected.

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