Cannot delete root a certificate manually with certmgr.

We are in the processing of the deployment of 802. 1 x throughout the organization. All of the client computers Windows XP SP3 and they are joined to the new Active Directory domain during the migration of the network. (Existing infrastructure is based on Novell NDS, which is being migrated) A GPO has been created in the pub for the 802. 1 x settings and a certification authority root of Thawte primary for all Client computers.

During the pilot process, we found that there are already two certificates in many machines trusted Local Machine CA root roots of primary Thawte in the store & a Thawte SSL in primary root (which is supposed to be at intermediate CA) it's originally 802. 1 x authentication problem because the GPO does not overwrite these certificates.  Once I have manually remove defective CERT & reapply the GPO, the machine works fine for authentication of 802. 1 x.

Now to avoid production problems, it is imperative to clean the machines for existing thawte certificates and get applied Group Policy, like machines to join the domain. This cant be done manually because we have more than 1500 workstations.

Here is the command I tried with the answer.

certmgr - del - c s root - sha1 91c6d6ee3e8ac86384e548c299295c756c817b81

Error: Could not delete certificates
CertMgr failed

Try to delete the certificate with the certificate number also led to the same result.

Please advice on how to proceed.

Thank you

Karthik Rama

Karthik,

This thread should be useful for you - abolition of certificates of clients by programming
Here's the article quoted in the thread - How to remove a CA approved of computers in the domain

If you need help, here's a list TechNet forums for computer professionals -http://social.technet.microsoft.com/Forums/en-us/categories/

Expert MowGreen Windows IT Pro - consumer safety

Tags: Windows

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