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servicemodelreg errors

When installing registering WCF with IIS using servicemodelreg.exe, you may get the following error:

A previous version of Windows Communication Foundation was detected


The HTTP namespace reservation already exists

Run the following to remove the existing namespace reservation.

netsh http delete urlacl url=http://+:80/Temporary_Listen_Addresses/

It will be put back by servicemodelreg.exe.

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