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This article helps fix the error 0xC004E015 that occurs when you activate Windows.
You receive the following error when you activate Windows:
Error: 0xC004E015 On a computer running Microsoft Windows non-core edition, run 'slui.exe 0x2a 0xC004E015' to display the error text.
This error occurs because the C:\Windows\System32\spp\store\2.0\tokens.dat file is corrupted.
To resolve the issue, rebuild the tokens.dat file and activate Windows again.
Important
If you're experiencing Azure virtual machine (VM) Windows activation issues, see Troubleshooting tools for Windows activation issues on Azure virtual machines.
More information
Normally, Windows can create a tokens.dat file. If you get an "Error: Product not found" error, run the following commands to reapply the Key Management Services (KMS) client key:
cscript c:\windows\system32\slmgr.vbs /ipk <KMS Client Key>
cscript c:\windows\system32\slmgr.vbs /ato
Note
You can get the <KMS Client Key> in Key Management Services (KMS) client activation and product keys depending on your Windows version.