The error
ERROR 10009: HostID mismatch
indicates that the license file was generated for a machine with a different host ID. If the license file previously worked on the same machine, then something in the machine configuration has changed. Possible reasons why a HostID might change are listed in What system changes can invalidate a license file?.
If it is not possible to revert back to the HostID associated with your license file, then you will need a new license file.
- Commercial users: please open a support request in our Help Center to initiate a license transfer.
- Academic users:
- Individual, named-user licenses: please refer to How do I transfer my free academic or free trial license to a different computer?.
- Academic floating site licenses: please open a support request in our Help Center to initiate a license transfer.
Further information
- How do I resolve an "ERROR 10009: License is for 8 cores, machine has XX"?
- How do I transfer my free academic or free trial license to a different computer?
- How do I obtain a free academic license for a cluster or a shared computer lab?
- What system changes can invalidate a license file?
- How do I configure an AWS EC2 instance so the license file remains valid?