We have not come across a DLL file named "Core activation64.dll" in our research. It is possible that you might be referring to the "activation64.dll" file instead. However, based on the name, it may be related to software activation or licensing for a particular application.
If you're experiencing issues related to Core activation64.dll, it may be due to corruption or conflicts with other software. In such cases, you can try reinstalling the software that uses this file or perform a system restore to a previous point where the system was working correctly. If the problem persists, you can try running a virus scan or contacting the software vendor for further assistance.
DLL research and information is supported by Artificial Intelligence and should be used as a helpful tool. However, it is important to keep in mind that this information may not be up-to-date or entirely accurate.