Issues with Intermediate certificates...
Question asked by Eric Tykwinski - September 16, 2015 at 9:36 AM
This has become sort of a thorn in my side, so hoping someone else has an answer.
We've got a Positive SSL certificate which comes with 2 intermediate certificates.  My problem is that the third certificate (COMODO RSA Domain Validation) keeps getting installed in the Trusted Root Certification Authorities folder.  Normal web browsers are fine, but it breaks ActiveSync for Android phones.  It's easy to fix by just deleting the cert from the Root folder and rebooting, but it's happened now 3 times and I can't figure out why.
Any help would be appreciated...

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Never trust the "auto install" certificate feature. Use the CERTIFICATE feature in MMC and install the cert in the proper category for the LOCAL MACHINE .
Bruce Barnes
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Don't delete it, you need to disable it. 
1) Right Click on the Cert -- Select Properties. 
2) Check the box that says "Disable all purposes for this certificate"
3) Click Ok
4) Restart IIS or Reboot your PC
5) Thank Me :)

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