Unable to open Plesk with IP address: Bad Request - Invalid Hostname

Created:

2016-11-16 13:20:11 UTC

Modified:

2017-08-16 17:28:16 UTC

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Unable to open Plesk with IP address: Bad Request - Invalid Hostname

Applicable to:

  • Plesk 12.5 for Linux
  • Plesk 11.x for Windows
  • Plesk 12.0 for Windows

Symptoms

Unable to open Plesk with IP address:

Bad Request - Invalid Hostname
HTTP Error 400. The request hostname is invalid.

The following errors can be found in Windows Event Log:

Binding information '2.2.2.2:8880:' is unsupported with dynamic mode. The Windows Process Activation Service (WAS) restart is required to register that binding.
Binding information '2.2.2.2:80:' is unsupported with dynamic mode. The Windows Process Activation Service (WAS) restart is required to register that binding.

Cause

Incorrect bindings for Plesk website in IIS.

Resolution

Recreate website bindings manually in IIS > Sites > Plesk website > Bindings

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