Hi all I have this error code when I installed windows defender 1.0.0.0 The program can't check for definition Updates Error code 0x80072f8f I have windows xp sp3 Automatic update running . I use kaspersky 2009 firewall running exceptions :nothing about windows defender. http://support.microsoft.com/kb/918355 I cant find any error like this in this page .1 person needs an answerI do too

How to troubleshoot definition update issues for Windows Defenderhttp://support.microsoft.com/kb/918355If nothing in the above article helps, then continue reading:-0x80072F8F -2147012721ERROR_INTERNET_SECURE_FAILURE ErrorClockWrongOne or more errors were found in the Secure Sockets Layer (SSL) certificate sent by the server.The date / time on your computer is too different from the date / time of the SSL (Secure Sockets Layer) certificates used by the Windows Update site.To resolve this problem, correct the date / time and/or time zone information. Click Start, click Run, type timedate.cpl, and then click OK. Set the date and time to the correct values for your time zone, and then click OK. Also check this articlehttp://support.microsoft.com/kb/326253Error message when you check for updates on the Windows Update site: "0X800A138F: There are no updates available at this time" Make sure that automatic updating of trusted root authority certificates is turned on1. In Control Panel, open Add or Remove Programs 2. Click Add/Remove Windows Components. 3. Select the Update Root Certificates check box. 4. Click Next, and then click Finish. Note• To open Add/Remove Windows Components, click Start, click Control Panel, click Add or Remove Programs, and then click Add/Remove Windows Components. You may also need to re-register some files:-Click Start. Choose Run. In the Run box, type regsvr32 SOFTPUB.dll. Click OKRepeat for the following files: Wintrust.dll, Initpki.dll, Mssip32.dllCheck your date and time settings Click Start. Click Settings. Click Control Panel. Double-click the Date/Time icon. Set the date and time to the correct values if necessaryNB: Also make sure you're in the correct time zone.TaurArian [MVP] 2005-2010 - Update Services

Are you running ESET/NOD32 anti-virus? If so and you have SSL protocol filtering enabled you need to add an exception:1) Open the main ESET window by clicking the ESET icon next to the system clock or by clicking Start > All Programs > ESET > ESET Smart Security or ESET NOD32 Antivirus.2) Press F5 on your keyboard to open the Advanced Setup window.3) Navigate to Antivirus and antispyware > Protocol filtering > SSL. Click "Ask about non-visited sites (exclusions can be set)". Click OK.4) Check for Windows updates5) An ESET pop-up window will inform you about an attempt to communicate via SSL. Click Exclude.6) This excludes Windows update from being checked by ESET. Exclusions are kept in Antivirus and antispyware > Protocol filtering > SSL > Certificates > Excluded certificates.7) Navigate back to Antivirus and Antispyware > Protocol filtering > SSL. Revert SSL filtering mode to your previous setting, i.e. select the option "Always scan SSL protocol".8) Verify the option "Apply created exceptions based on certificates" is selected. Click Ok to close the Advanced Settings window.Alternatively you can simply turn off SSL filtering at step 3.