Posts Tagged ‘IIS’

IIS: There was an error while performing this operation

This is more of a tip than a post. Today I had  the following error in IIS while modifying Handler Mappings

There was an error while performing this operation.


Filename: \\?\C:\SomePath\web.config

Error: Cannot write configuration file due to insufficient permissions


We are using TFS, and TFS sets the Readonly flag when the file is checkin. Basically, all you need is to check out the web.config before do your modifications in IIS

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