{"id":1052,"date":"2008-04-17T15:01:52","date_gmt":"2008-04-17T15:01:52","guid":{"rendered":"http:\/\/www.markwilson.co.uk\/blog\/2008\/04\/caching-microsoft-updates-with-isa-server.htm"},"modified":"2008-04-17T15:06:00","modified_gmt":"2008-04-17T15:06:00","slug":"caching-microsoft-updates-with-isa-server","status":"publish","type":"post","link":"https:\/\/www.markwilson.co.uk\/blog\/2008\/04\/caching-microsoft-updates-with-isa-server.htm","title":{"rendered":"Caching Microsoft updates with ISA Server"},"content":{"rendered":"<p>I used to use WSUS to update the machines on my home network but after <a href=\"https:\/\/www.markwilson.co.uk\/blog\/2007\/08\/how-not-to-upgrade-from-windows-server-2003-to-windows-server-2003-r2.htm\">a botched server upgrade<\/a>, it all went screwy and I didn&#8217;t really want to have to pull all the updates down over my ADSL connection again (would probably blow away my month&#8217;s worth of &#8220;fair usage&#8221;).  In any case all I was doing was <a href=\"https:\/\/www.markwilson.co.uk\/blog\/2008\/02\/when-windows-updates-turn-bad.htm\">blindly approving updates for installation<\/a> so I might as well use the Microsoft Update servers instead.<\/p>\n<p>The only downside of using the Microsoft Update servers to update several computers is that there is a lot of duplication in the network traffic.  That&#8217;s why <a href=\"http:\/\/www.microsoft.com\/technet\/isa\/2006\/cache_concepts.mspx\">ISA Server 2006 includes a cache rule that enables caching of Microsoft updates using the Background Intelligent Transfer Service<\/a> (BITS). For those who aren&#8217;t aware, BITS allows the transfer of large volumes of data without degrading network performance as it transfers the data in small chunks to utilise unused bandwidth as it becomes available and reassembles the data at the destination. The BITS feature is not available for any other ISA cache rule but the Microsoft Update Cache Rule is installed by default and all I needed to do was enable caching.<\/p>\n<p>After setting up the cache rules and updating one of my servers, I wanted to see that the cache was being used.  <a href=\"https:\/\/www.markwilson.co.uk\/blog\/2005\/05\/installing-and-verifying-configuration.htm\">I&#8217;ve previously mentioned the <code>cachedir.exe<\/code> tool<\/a> that can be used to examine ISA Server caches and I downloaded the latest version from <a href=\"http:\/\/technet.microsoft.com\/en-us\/forefront\/edgesecurity\/bb734830.aspx\">Microsoft&#8217;s ISA Server 2006 tools page<\/a>.  After extracting the tool, I ran it and was presented with an error:<\/p>\n<p><em>CACHEDIR.exe &#8211; Unable to Locate Component<br \/>\nThis application has failed to start because msfpc.DLL was not found.  Re-installing the application may fix the problem.<\/em><\/p>\n<p>Then I remembered that <code>cachedir.exe<\/code> needs to be copied to the ISA Server installation folder (on my system that is %programfiles%\\Microsoft ISA Server) &#8211; after moving the file to the correct folder, it fired up as expected.  Just remember that this utility can only display the cache contents that have been written to disk.  To flush the memory cache to disk you will need to restart the Microsoft Firewall service and re-run <code>cachedir.exe<\/code> to view the contents.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I used to use WSUS to update the machines on my home network but after a botched server upgrade, it all went screwy and I didn&#8217;t really want to have to pull all the updates down over my ADSL connection again (would probably blow away my month&#8217;s worth of &#8220;fair usage&#8221;). In any case all &hellip; <a href=\"https:\/\/www.markwilson.co.uk\/blog\/2008\/04\/caching-microsoft-updates-with-isa-server.htm\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Caching Microsoft updates with ISA Server<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[71,20],"class_list":["post-1052","post","type-post","status-publish","format-standard","hentry","tag-isa","tag-patch-management"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Caching Microsoft updates with ISA Server - markwilson.it<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.markwilson.co.uk\/blog\/2008\/04\/caching-microsoft-updates-with-isa-server.htm\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Caching Microsoft updates with ISA Server - markwilson.it\" \/>\n<meta property=\"og:description\" content=\"I used to use WSUS to update the machines on my home network but after a botched server upgrade, it all went screwy and I didn&#8217;t really want to have to pull all the updates down over my ADSL connection again (would probably blow away my month&#8217;s worth of &#8220;fair usage&#8221;). In any case all &hellip; Continue reading Caching Microsoft updates with ISA Server\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.markwilson.co.uk\/blog\/2008\/04\/caching-microsoft-updates-with-isa-server.htm\" \/>\n<meta property=\"og:site_name\" content=\"markwilson.it\" \/>\n<meta property=\"article:published_time\" content=\"2008-04-17T15:01:52+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2008-04-17T15:06:00+00:00\" \/>\n<meta name=\"author\" content=\"Mark Wilson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@markwilsonit\" \/>\n<meta name=\"twitter:site\" content=\"@markwilsonit\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mark Wilson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/04\\\/caching-microsoft-updates-with-isa-server.htm#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/04\\\/caching-microsoft-updates-with-isa-server.htm\"},\"author\":{\"name\":\"Mark Wilson\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/98f61365e7c39d6be942174b8c4de468\"},\"headline\":\"Caching Microsoft updates with ISA Server\",\"datePublished\":\"2008-04-17T15:01:52+00:00\",\"dateModified\":\"2008-04-17T15:06:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/04\\\/caching-microsoft-updates-with-isa-server.htm\"},\"wordCount\":368,\"commentCount\":1,\"publisher\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/98f61365e7c39d6be942174b8c4de468\"},\"keywords\":[\"Microsoft ISA Server\",\"Patch Management\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/04\\\/caching-microsoft-updates-with-isa-server.htm#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/04\\\/caching-microsoft-updates-with-isa-server.htm\",\"url\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/04\\\/caching-microsoft-updates-with-isa-server.htm\",\"name\":\"Caching Microsoft updates with ISA Server - markwilson.it\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#website\"},\"datePublished\":\"2008-04-17T15:01:52+00:00\",\"dateModified\":\"2008-04-17T15:06:00+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/04\\\/caching-microsoft-updates-with-isa-server.htm#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/04\\\/caching-microsoft-updates-with-isa-server.htm\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/04\\\/caching-microsoft-updates-with-isa-server.htm#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Caching Microsoft updates with ISA Server\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/\",\"name\":\"markwilson.it\",\"description\":\"get-info -class technology | write-output &gt; 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I haven't done anything with ISA Server since then but over the last few days, I've been installing an new ISA Server 2000 array into an existing enterprise for\u2026","rel":"","context":"In \"Microsoft ISA Server\"","block_context":{"text":"Microsoft ISA Server","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/isa"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":317,"url":"https:\/\/www.markwilson.co.uk\/blog\/2005\/06\/chaining-proxy-servers.htm","url_meta":{"origin":1052,"position":2},"title":"Chaining proxy servers","author":"Mark Wilson","date":"Thursday 30 June 2005","format":false,"excerpt":"I spent some time yesterday chaining two ISA Server 2000 proxy arrays. As there doesn't seem to be a lot of information about on the subject, I thought I'd provide some here (most of what can be found easily is about using proxy chaining for anonymity, and mostly reads as\u2026","rel":"","context":"In \"Microsoft ISA Server\"","block_context":{"text":"Microsoft ISA Server","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/isa"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":975,"url":"https:\/\/www.markwilson.co.uk\/blog\/2008\/01\/forefront-security-overview.htm","url_meta":{"origin":1052,"position":3},"title":"Forefront Security overview","author":"Mark Wilson","date":"Tuesday 15 January 2008","format":false,"excerpt":"A few weeks back, I spent some time learning about the Microsoft Forefront security products.\u00a0 I've written before about Forefront Client Security and intend to write some more posts that go into some detail on the other Forefront products, but I thought I'd start by taking a look at the\u2026","rel":"","context":"In \"Microsoft Forefront\"","block_context":{"text":"Microsoft Forefront","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/forefront"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":281,"url":"https:\/\/www.markwilson.co.uk\/blog\/2006\/05\/configuring-network-connections-for.htm","url_meta":{"origin":1052,"position":4},"title":"Configuring network connections for ISA Server 2000\/2004 (aka when proxy server migrations turn bad)","author":"Mark Wilson","date":"Thursday 18 May 2006","format":false,"excerpt":"It was supposed to be so easy. The new server was already built, with the same IP addresses as the old one. All I had to do was disconnect the NT 4.0 Proxy Server from the network and power on the new Windows Server 2003 R2 box with Internet Security\u2026","rel":"","context":"In \"Microsoft ISA Server\"","block_context":{"text":"Microsoft ISA Server","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/isa"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":234,"url":"https:\/\/www.markwilson.co.uk\/blog\/2005\/08\/more-on-wpad.htm","url_meta":{"origin":1052,"position":5},"title":"More on WPAD","author":"Mark Wilson","date":"Tuesday 2 August 2005","format":false,"excerpt":"Last week I blogged about configuring WPAD for Internet Explorer clients. 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