1140-Error The TTOKI initialization failed Error number C0 Signature invalid

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Error: The TTOKI initialization failed | Error number C0 | Signature invalid

Error message:

The TTOKI initialization failed

Error number C0

Signature invalid

A computer screen with a blue background  Description automatically generated

Reason: The module(s) comprising the cryptographic engine does not match the checksum.

Two possible reasons for that:

  1. One of the checksums is corrupted.
  2. Something went wrong during upgrade of the client and a checksum(s) was not properly updated.

To troubleshoot this error:

Ask the customer sends us the following files:

Located in either:

  • Windows\System32:
  • Windows\SysWOW64:

find and send us the chktoki.dat file

and chkuser.dat

Located in:

  • Windows System32\Drivers:

find and send us the Chkdtk.dat file

We would also need the build number installed on the affected client machines.

Development will need to look at this - best resource is Alex M.

Example screenshot of error is in attachment

Custom Fields

  • Error message or code: C0 TTOKI
  • Operating System: Windows