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Known threats:699,443 Last Update:July 01, 07:23

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DisallowedSystemCertificates

How to Remove DisallowedSystemCertificates from Your Computer

To completely purge DisallowedSystemCertificates from your computer, you need to delete the Windows registry keys and registry values associated with DisallowedSystemCertificates. These registry keys and values are respectively listed in the Registry Keys and Registry Values sections on this page.

For instructions on deleting the DisallowedSystemCertificates registry keys and registry values, see the following section How to Remove DisallowedSystemCertificates from the Windows Registry.

How to Remove DisallowedSystemCertificates from the Windows Registry^

The Windows registry stores important system information such as system preferences, user settings and installed programs details as well as the information about the applications that are automatically run at start-up. Because of this, spyware, malware and adware often store references to their own files in your Windows registry so that they can automatically launch every time you start up your computer.

To effectively remove DisallowedSystemCertificates from your Windows registry, you must delete all the registry keys and values associated with DisallowedSystemCertificates, which are listed in the Registry Keys and Registry Values sections on this page.

IMPORTANT: Because the registry is a core component of your Windows system, it is strongly recommended that you back up the registry before you begin deleting keys and values. For information about backing up the Windows registry, refer to the Registry Editor online help.

To remove the DisallowedSystemCertificates registry keys and values:

  1. On the Windows Start menu, click Run.
  2. In the Open box, type regedit and click OK.
    The Registry Editor window opens. This window consists of two panes. The left pane displays folders that represent the registry keys arranged in hierarchical order. The right one lists the registry values of the currently selected registry key.
  3. To delete each registry key listed in the Registry Keys section, do the following:
    • Locate the key in the left pane of the Registry Editor window by sequentially expanding the folders according to the path indicated in the Registry Keys section. For example, if the path of a registry key is
      HKEY_LOCAL_MACHINE\software\FolderA\FolderB\KeyName1
      sequentially expand the HKEY_LOCAL_MACHINE, software, FolderA and FolderB folders.
    • Select the key name indicated at the end of the path (KeyName1 in the example above).
    • Right-click the key name and select Delete on the menu.
    • Click Yes in the Confirm Key Delete dialog box.
  4. To delete each registry value listed in the Registry Values section, do the following:
    • Display the value in the right pane of the Registry Editor window by sequentially expanding the folders in the left pane according to the path indicated in the Registry Values section and selecting the specified key name. For example, if the path of a registry value is
      HKEY_LOCAL_MACHINE\software\FolderA\FolderB\KeyName2,valueC=
      sequentially expand the HKEY_LOCAL_MACHINE, software, FolderA and FolderB folders and select the KeyName2 key to display the valueC value in the right pane.
    • In the right pane, select the value name indicated after a comma at the end of the path (valueC in the example above).
    • Right-click the value name and select Delete on the menu.
    • Click Yes in the Confirm Value Delete dialog box.
Registry Keys
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\AD96BB64BA36379D2E354660780C2067B81DA2E0
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\FBB42F089AF2D570F2BF6F493D107A3255A9BB1A
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\775B373B33B9D15B58BC02B184704332B97C3CAF
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\42727E052C0C2E1B35AB53E1005FD9EDC9DE8F01
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\ED841A61C0F76025598421BC1B00E24189E68D54
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\1667908C9E22EFBD0590E088715CC74BE4C60884
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\18DEA4EFA93B06AE997D234411F3FD72A677EECE
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\373C33726722D3A5D1EDD1F1585D5D25B39BEA1A
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\3353EA609334A9F23A701B9159E30CB6C22D4C59
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\88AD5DFE24126872B33175D1778687B642323ACF
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\9132E8B079D080E01D52631690BE18EBC2347C1E
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\DB303C9B61282DE525DC754A535CA2D6A9BD3D87
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\9A08641F7C5F2CCA0888388BE3E5DBDDAAA3B361
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\9C43F665E690AB4D486D4717B456C5554D4BCEB5
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\A1F8DCB086E461E2ABB4B46ADCFA0B48C58B6E99
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\4420C99742DF11DD0795BC15B7B0ABF090DC84DF
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\AB7E760DA2485EA9EF5A6EEE7647748D4BA6B947
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\E513EAB8610CFFD7C87E00BCA15C23AAB407FCEF
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\5DD3D41810F28B2A13E9A004E6412061E28FA48D
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\3850EDD77CC74EC9F4829AE406BBF9C21E0DA87F
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\DB77E5CFEC34459146748B667C97B185619251BA
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\0F684EC1163281085C6AF20528878103ACEFCAAB
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\872CD334B7E7B3C3D1C6114CD6B221026D505EAB
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\03D22C9C66915D58C88912B64C1F984B8344EF09
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\3D496FA682E65FC122351EC29B55AB94F3BB03FC
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\A5341949ABE1407DD7BF7DFE75460D9608FBC309
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\2026D13756EB0DB753DF26CB3B7EEBE3E70BB2CF
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\4243A03DB4C3C15149CEA8B38EEA1DA4F26BD159
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\5240AB5B05D11B37900AC7712A3C6AE42F377C8C
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\D3F78D747E7C5D6D3AE8ABFDDA7522BFB4CBD598
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\AD4C5429E10F4FF6C01840C20ABA344D7401209F
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\CDC37C22FE9272D8F2610206AD397A45040326B8
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\31AC96A6C17C425222C46D55C3CCA6BA12E54DAF
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\331E2046A1CCA7BFEF766724394BE6112B4CA3F7
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\FFFA650F2CB2ABC0D80527B524DD3F9FC172C138
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\4C0AF5719009B7C9D85C5EAEDFA3B7F090FE5FFF
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\F83099622B4A9F72CB5081F742164AD1B8D048C9
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\E22240E837B52E691C71DF248F12D27F96441C00
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\A59CC32724DD07A6FC33F7806945481A2D13CA2F
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\7457A3793086DBB58B3858D6476889E3311E550E
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\982D98951CF3C0CA2A02814D474A976CBFF6BDB1
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\76A9295EF4343E12DFC5FE05DC57227C1AB00D29
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\9E3F95577B37C74CA2F70C1E1859E798B7FC6B13
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\249BDA38A611CD746A132FA2AF995A2D3C941264
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\B8EBF0E696AF77F51C96DB4D044586E2F4F8FD84
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\03D22C9C66915D58C88912B64C1F984B8344EF09
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\0F684EC1163281085C6AF20528878103ACEFCAAB
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\1667908C9E22EFBD0590E088715CC74BE4C60884
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\18DEA4EFA93B06AE997D234411F3FD72A677EECE
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\2026D13756EB0DB753DF26CB3B7EEBE3E70BB2CF
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\249BDA38A611CD746A132FA2AF995A2D3C941264
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\31AC96A6C17C425222C46D55C3CCA6BA12E54DAF
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\331E2046A1CCA7BFEF766724394BE6112B4CA3F7
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\3353EA609334A9F23A701B9159E30CB6C22D4C59
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\373C33726722D3A5D1EDD1F1585D5D25B39BEA1A
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\3850EDD77CC74EC9F4829AE406BBF9C21E0DA87F
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\3D496FA682E65FC122351EC29B55AB94F3BB03FC
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\4243A03DB4C3C15149CEA8B38EEA1DA4F26BD159
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\42727E052C0C2E1B35AB53E1005FD9EDC9DE8F01
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\4420C99742DF11DD0795BC15B7B0ABF090DC84DF
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\4C0AF5719009B7C9D85C5EAEDFA3B7F090FE5FFF
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\5240AB5B05D11B37900AC7712A3C6AE42F377C8C
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\5DD3D41810F28B2A13E9A004E6412061E28FA48D
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\7457A3793086DBB58B3858D6476889E3311E550E
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\76A9295EF4343E12DFC5FE05DC57227C1AB00D29
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\775B373B33B9D15B58BC02B184704332B97C3CAF
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\872CD334B7E7B3C3D1C6114CD6B221026D505EAB
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\88AD5DFE24126872B33175D1778687B642323ACF
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\9132E8B079D080E01D52631690BE18EBC2347C1E
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\982D98951CF3C0CA2A02814D474A976CBFF6BDB1
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\9A08641F7C5F2CCA0888388BE3E5DBDDAAA3B361
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\9C43F665E690AB4D486D4717B456C5554D4BCEB5
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\A1F8DCB086E461E2ABB4B46ADCFA0B48C58B6E99
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\A5341949ABE1407DD7BF7DFE75460D9608FBC309
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\A59CC32724DD07A6FC33F7806945481A2D13CA2F
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\AB7E760DA2485EA9EF5A6EEE7647748D4BA6B947
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\AD4C5429E10F4FF6C01840C20ABA344D7401209F
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\AD96BB64BA36379D2E354660780C2067B81DA2E0
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\B8EBF0E696AF77F51C96DB4D044586E2F4F8FD84
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\CDC37C22FE9272D8F2610206AD397A45040326B8
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\D3F78D747E7C5D6D3AE8ABFDDA7522BFB4CBD598
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\DB303C9B61282DE525DC754A535CA2D6A9BD3D87
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\DB77E5CFEC34459146748B667C97B185619251BA
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\E22240E837B52E691C71DF248F12D27F96441C00
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\E513EAB8610CFFD7C87E00BCA15C23AAB407FCEF
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\ED841A61C0F76025598421BC1B00E24189E68D54
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\F83099622B4A9F72CB5081F742164AD1B8D048C9
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\FBB42F089AF2D570F2BF6F493D107A3255A9BB1A
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\FFFA650F2CB2ABC0D80527B524DD3F9FC172C138
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\SystemCertificates\Disallowed\Certificates\9E3F95577B37C74CA2F70C1E1859E798B7FC6B13

PUC

The Potentially Unwanted Change are the modification which malware usually does. It will be detected when settings are different from the Microsoft defaults. Ignore such detections when they were made by user.

Be Aware of the Following PUC Threats:

pelyena.ru, aqovd.com.

How Did My PC Get Infected with DisallowedSystemCertificates?^

The following are the most likely reasons why your computer got infected with DisallowedSystemCertificates:

  • Your operating system and Web browser's security settings are too lax.
  • You are not following safe Internet surfing and PC practices.

Downloading and Installing Freeware or Shareware

Small-charge or free software applications may come bundled with spyware, adware, or programs like DisallowedSystemCertificates. Sometimes adware is attached to free software to enable the developers to cover the overhead involved in created the software. Spyware frequently piggybacks on free software into your computer to damage it and steal valuable private information.

Using Peer-to-Peer Software

The use of peer-to-peer (P2P) programs or other applications using a shared network exposes your system to the risk of unwittingly downloading infected files, including malicious programs like DisallowedSystemCertificates.

Visiting Questionable Web Sites

When you visit sites with dubious or objectionable content, trojans-including DisallowedSystemCertificates, spyware and adware, may well be automatically downloaded and installed onto your computer.

Detecting DisallowedSystemCertificates^

The following symptoms signal that your computer is very likely to be infected with DisallowedSystemCertificates:

PC is working very slowly

DisallowedSystemCertificates can seriously slow down your computer. If your PC takes a lot longer than normal to restart or your Internet connection is extremely slow, your computer may well be infected with DisallowedSystemCertificates.

New desktop shortcuts have appeared or the home page has changed

DisallowedSystemCertificates can tamper with your Internet settings or redirect your default home page to unwanted web sites. DisallowedSystemCertificates may even add new shortcuts to your PC desktop.

Annoying popups keep appearing on your PC

DisallowedSystemCertificates may swamp your computer with pestering popup ads, even when you're not connected to the Internet, while secretly tracking your browsing habits and gathering your personal information.

E-mails that you didn't write are being sent from your mailbox

DisallowedSystemCertificates may gain complete control of your mailbox to generate and send e-mail with virus attachments, e-mail hoaxes, spam and other types of unsolicited e-mail to other people.