I installed Sitecore PowerShell Extensions-4.7 for Sitecore 8 and Sitecore Experience Accelerator 1.6 rev. 180103 for 9.0 on my Sitecore 9 and I got this error, this installation broke my Sitecore, I already restored and tried 3 times, and the same error pops up

“Method not found: 'Boolean Sitecore.Data.ID.Equals(Sitecore.Data.ID)'. Description: An unhandled exception occurred.

Exception Details: System.MissingMethodException: Method not found: 'Boolean Sitecore.Data.ID.Equals(Sitecore.Data.ID)'.

However, I installed the same items but on Sitecore.NET 9.0.1 (rev. 171219) And I don´t have this error

Did anyone have a similar situation?

Thank you

1 Answer 1


SXA 1.6 needs Sitecore Experience Platform 8.2 Update 6 or Sitecore 9.0 update 1. It won't work on Sitecore 9.0 initial release.

For 9.0 initial release, you can use SXA 1.5

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