{"id":260,"date":"2005-10-17T17:15:00","date_gmt":"2005-10-17T17:15:00","guid":{"rendered":"http:\/\/markwilson.me.uk\/blog\/2005\/10\/gpmc-modelling-after-upgrading-active.htm"},"modified":"2007-06-11T20:20:35","modified_gmt":"2007-06-11T19:20:35","slug":"gpmc-modelling-after-upgrading-active","status":"publish","type":"post","link":"https:\/\/www.markwilson.co.uk\/blog\/2005\/10\/gpmc-modelling-after-upgrading-active.htm","title":{"rendered":"GPMC modelling after upgrading Active Directory"},"content":{"rendered":"<p><!--112957050336894901-->Earlier today, I came across a interesting hangover from <a href=\"https:\/\/www.markwilson.co.uk\/blog\/2005\/10\/this-is-why-im-not-fan-of-java.htm\">last week&#8217;s domain upgrade from Windows 2000 Server to Windows Server 2003<\/a>.<\/p>\n<p>After installing the <a href=\"https:\/\/www.markwilson.co.uk\/blog\/2005\/02\/new-features-of-windows-server-2003.htm\">group policy management console<\/a> (GPMC), I was viewing a pre-existing group policy object (GPO) and GPMC notified me that Enterprise Domain Controllers did not have read access to all GPOs in the domain. This was initially worrying, but for once the help link had some useful information at the other end.<\/p>\n<p>It turns out that Windows Server 2003 group policy modelling (simulating the resultant set of policy for a given configuration) is performed by a service that runs on domain controllers and in order to perform the simulation in cross-domain scenarios, the service must have read access to all GPOs in the forest.<\/p>\n<p>In a Windows Server 2003 domain (whether it is upgraded from Windows 2000 or installed as new), the Enterprise Domain Controllers group is automatically given read access to all newly created GPOs. This ensures that the service can read all GPOs in the forest.<\/p>\n<p>However, if the domain was upgraded from Windows 2000, any existing GPOs that were created before the upgrade do not have read access for the Enterprise Domain Controllers group.<\/p>\n<p>GPMC had detected this situation and notified me that Enterprise Domain Controllers do not have read access to all GPOs in this domain and after reading the help text was was directed to use one of the sample scripts provided with GPMC, <code>GrantPermissionOnAllGPOs.wsf<\/code> to update the permissions for all GPOs in the domain.<\/p>\n<p>Whilst logged on with Domain Admins permissions I simply opened a command prompt, navigated to %programfiles%\\gpmc\\scripts and issued the command <code>cscript GrantPermissionOnAllGPOs.wsf \"Enterprise Domain Controllers\" \/Permission:Read \/Domain:<em>dnsdomainname<\/em><\/code>.<\/p>\n<p>The output was as follows:<\/p>\n<p><em>C:\\Program Files\\GPMC\\Scripts&gt;Cscript GrantPermissionOnAllGPOs.wsf &#8220;Enterprise Domain Controllers&#8221; \/Permission:Read \/Domain:home.local<br \/>\nMicrosoft (R) Windows Script Host Version 5.6<br \/>\nCopyright (C) Microsoft Corporation 1996-2001. All rights reserved.<\/em><\/p>\n<p><em>Warning! By executing this script, all GPOs in the target domain will be updated with the desired security setting.<\/em><\/p>\n<p><em>Both the Active Directory and Sysvol portions of the GPO will be updated. This will result in the Sysvol contents of every GPO being copied to all replica domain controllers, and may cause excessive replication traffic in your domain.<\/em><\/p>\n<p><em>If you have slow network links or restricted bandwidth between your domain controllers, you should check the amount of data on the Sysvol that would be replicated before performing this task.<\/em><\/p>\n<p><em>Do you want to proceed? [Y\/N]<br \/>\nY<br \/>\nUpdated GPO &#8216;Default Domain Policy&#8217; to &#8216;Read&#8217; for Enterprise Domain Controllers<br \/>\nUpdated GPO &#8216;Windows Software Update Services&#8217; to &#8216;Read&#8217; for Enterprise Domain Controllers<br \/>\nUpdated GPO &#8216;Default Domain Controllers Policy&#8217; to &#8216;Read&#8217; for Enterprise Domain Controllers<\/em><\/p>\n<p>Once this was completed, GPMC was able to function as normal with the existing GPOs.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Earlier today, I came across a interesting hangover from last week&#8217;s domain upgrade from Windows 2000 Server to Windows Server 2003. After installing the group policy management console (GPMC), I was viewing a pre-existing group policy object (GPO) and GPMC notified me that Enterprise Domain Controllers did not have read access to all GPOs in &hellip; <a href=\"https:\/\/www.markwilson.co.uk\/blog\/2005\/10\/gpmc-modelling-after-upgrading-active.htm\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">GPMC modelling after upgrading Active Directory<\/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_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[],"tags":[102,101],"class_list":["post-260","post","type-post","status-publish","format-standard","hentry","tag-active-directory","tag-windows-server-2003"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>GPMC modelling after upgrading Active Directory - 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\/2005\/10\/gpmc-modelling-after-upgrading-active.htm\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"GPMC modelling after upgrading Active Directory - markwilson.it\" \/>\n<meta property=\"og:description\" content=\"Earlier today, I came across a interesting hangover from last week&#8217;s domain upgrade from Windows 2000 Server to Windows Server 2003. After installing the group policy management console (GPMC), I was viewing a pre-existing group policy object (GPO) and GPMC notified me that Enterprise Domain Controllers did not have read access to all GPOs in &hellip; Continue reading GPMC modelling after upgrading Active Directory\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.markwilson.co.uk\/blog\/2005\/10\/gpmc-modelling-after-upgrading-active.htm\" \/>\n<meta property=\"og:site_name\" content=\"markwilson.it\" \/>\n<meta property=\"article:published_time\" content=\"2005-10-17T17:15:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2007-06-11T19:20:35+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\\\/2005\\\/10\\\/gpmc-modelling-after-upgrading-active.htm#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2005\\\/10\\\/gpmc-modelling-after-upgrading-active.htm\"},\"author\":{\"name\":\"Mark Wilson\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/98f61365e7c39d6be942174b8c4de468\"},\"headline\":\"GPMC modelling after upgrading Active Directory\",\"datePublished\":\"2005-10-17T17:15:00+00:00\",\"dateModified\":\"2007-06-11T19:20:35+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2005\\\/10\\\/gpmc-modelling-after-upgrading-active.htm\"},\"wordCount\":458,\"commentCount\":4,\"publisher\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/98f61365e7c39d6be942174b8c4de468\"},\"keywords\":[\"Microsoft Active Directory\",\"Microsoft Windows Server 2003\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2005\\\/10\\\/gpmc-modelling-after-upgrading-active.htm#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2005\\\/10\\\/gpmc-modelling-after-upgrading-active.htm\",\"url\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2005\\\/10\\\/gpmc-modelling-after-upgrading-active.htm\",\"name\":\"GPMC modelling after upgrading Active Directory - markwilson.it\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#website\"},\"datePublished\":\"2005-10-17T17:15:00+00:00\",\"dateModified\":\"2007-06-11T19:20:35+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2005\\\/10\\\/gpmc-modelling-after-upgrading-active.htm#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2005\\\/10\\\/gpmc-modelling-after-upgrading-active.htm\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2005\\\/10\\\/gpmc-modelling-after-upgrading-active.htm#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"GPMC modelling after upgrading Active Directory\"}]},{\"@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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Group policy is not available with\u2026","rel":"","context":"In \"Microsoft Active Directory\"","block_context":{"text":"Microsoft Active Directory","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/active-directory"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":194,"url":"https:\/\/www.markwilson.co.uk\/blog\/2005\/11\/windows-management-technologies.htm","url_meta":{"origin":260,"position":2},"title":"Windows management technologies","author":"Mark Wilson","date":"Thursday 3 November 2005","format":false,"excerpt":"At the Best of the Microsoft Management Summit 2005 event a few weeks back, Vlad Joanavic gave an overview of some of the \"free\" Windows Management technologies that are available (in addition to the \"paid\" products under the System Center brand). These basically break down into: Windows Software Update Services\u2026","rel":"","context":"In \"Microsoft Active Directory\"","block_context":{"text":"Microsoft Active Directory","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/active-directory"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":499,"url":"https:\/\/www.markwilson.co.uk\/blog\/2004\/09\/priority-order-for-application-of-gpos.htm","url_meta":{"origin":260,"position":3},"title":"Priority order for the application of GPOs","author":"Mark Wilson","date":"Friday 17 September 2004","format":false,"excerpt":"The group policy management console (GPMC) integrates group policy functionality from a variety of Active Directory administrative tools into a single, unified console dedicated to group policy management tasks. One of the many useful features of GPMC is the ability to carry out group policy modelling, for example when diagnosing\u2026","rel":"","context":"In \"Microsoft Active Directory\"","block_context":{"text":"Microsoft Active Directory","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/active-directory"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":810,"url":"https:\/\/www.markwilson.co.uk\/blog\/2007\/06\/group-policy-in-windows-vista.htm","url_meta":{"origin":260,"position":4},"title":"Group policy in Windows Vista","author":"Mark Wilson","date":"Friday 8 June 2007","format":false,"excerpt":"Windows Vista makes a number of changes to the implementation and management of group policy objects (GPOs) and, as group policy is something that I haven't worked with for a while, I figured it was time to take another look. A week or so back, I spent the morning at\u2026","rel":"","context":"In \"Microsoft Active Directory\"","block_context":{"text":"Microsoft Active Directory","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/active-directory"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1207,"url":"https:\/\/www.markwilson.co.uk\/blog\/2008\/09\/active-directory-design-considerations-part-4-group-policy-objects.htm","url_meta":{"origin":260,"position":5},"title":"Active Directory design considerations: part 4 (group policy objects)","author":"Mark Wilson","date":"Thursday 18 September 2008","format":false,"excerpt":"So far in this series of posts about design considerations for Microsoft Active Directory (AD), based around the MCS Talks: Enterprise Architecture series of webcasts, I've looked at forest and domain design and organizational unit (OU) structure. 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