5-I think it is not posiible to upgrade to OEM xp/vista to OEM windows 7 as OEM media is for new hardware only 6 -this is gray area as OEM upgrade version does not exists.However OEM version do exists. 4-you should be entitled to any support from MS regarding software updates only(patches). so in this upgrade you should be treated as installer and all support related issues except updates are to handled by you. 3- now you are upgrading n your own and your system builder is not involved. 2-your OEM EULA was for previous version of your OS.

NOTE : If the issue persists, perform the above steps (1-4) to delete the certificates from the Untrusted Certificates tree and then follow the steps in this article to contact our Support.1- logically speaking you can activate. Run a Full System Scan in order to remove the malware. Open the main Bitdefender interface and update the product.ħ. Open Bitdefender Central, go to My Devices and Install Bitdefender.Ħ. Remove all the certificates from this folder.ĥ. Here, most of the AV certificates will be present, including Bitdefender, which is why the software is being blocked.Ĥ. Expand the Untrusted Certificates tree, then open the subfolder Certificates.ģ. Press the Windows key + R and type certmgr.mscĢ. It also keeps adding them back as untrusted if their status changes.ġ. User Account Control prompts users for confirmation whenever a program wants to make a system change that requires administrator-level privileges. Depending on whether an executed file is digitally signed by a trusted publisher, the UAC displays confirmation prompts indicating different levels of risk. However, if the file is signed with a certificate that was blacklisted, UAC will simply block the file from running and a red warning will be displayed.īased on the alteration of the User Account Control in Windows, this malware prevents users from installing certain security products, by copying digital certificates that are used to sign antivirus programs to the Untrusted Certificates in Windows. A new malware program is preventing users from installing antivirus products by taking advantage of the digital signature check performed by the Windows User Account Control (UAC) for executable files.

Windows vista oem cert auto installer