{"id":1593,"date":"2016-02-07T20:44:27","date_gmt":"2016-02-07T15:14:27","guid":{"rendered":"http:\/\/198.58.113.91\/blog\/?p=1593"},"modified":"2019-08-09T05:04:52","modified_gmt":"2019-08-09T05:04:52","slug":"disk-defrag-error-storage-optimization-cannot-start","status":"publish","type":"post","link":"https:\/\/www.winhelponline.com\/blog\/disk-defrag-error-storage-optimization-cannot-start\/","title":{"rendered":"Fix Disk Defragmenter Error “Storage optimization cannot start”"},"content":{"rendered":"

When you start the Disk Defragmenter utility in Windows 8 or 10, the following error occurs and the Disk Defragmenter window doesn’t open.<\/p>\n

Storage optimization cannot start because the task scheduler service is not running. Start the task scheduler service and try again.<\/i><\/p>\n

<\/p>\n

Just as the error message instructs, starting Task Scheduler resolves the problem. Use these steps:<\/p>\n

    \n
  1. Click Start, type services.msc<\/b><\/code> and press ENTER<\/li>\n
  2. Double-click Task Scheduler service from the list.<\/li>\n
  3. Verify if the service is started and the startup type set to Automatic<\/b>.
    \n<\/li>\n
  4. If it’s not started, click the Start button to start the service. If the startup type is set to anything other than Automatic, such as Manual or Disabled, and the option is grayed out<\/u>, download Scheduler.reg<\/code> fix (for Windows 7, 8, and Windows 10) referenced in article Task Scheduler Service Grayed Out in Services MMC<\/a> and run it.
    \n<\/li>\n<\/ol>\n

    The REG file should set the Task Scheduler service startup type to Automatic. Restart Windows and check if Task Scheduler starts automatically.<\/p>\n","protected":false},"excerpt":{"rendered":"

    When you start the Disk Defragmenter utility in Windows 8 or 10, the following error occurs and the Disk Defragmenter window doesn’t open. Storage optimization cannot start because the task scheduler service is not running. Start the task scheduler service and try again.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[8,10],"tags":[191],"class_list":["post-1593","post","type-post","status-publish","format-standard","hentry","category-windows-10","category-windows-8","tag-error-messages"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":44,"url":"https:\/\/www.winhelponline.com\/blog\/task-scheduler-service-grayed-out-windows\/","url_meta":{"origin":1593,"position":0},"title":"Task Scheduler Service Grayed Out in Services MMC","author":"Ramesh","date":"March 4, 2008","format":false,"excerpt":"When you open the Services management console (services.msc), the Task Scheduler service may be in a disabled state. In the Task Scheduler properties page, all the options may be grayed out, and the service Startup type cannot be changed. RELATED: How to View and Modify Service Permissions in Windows This\u2026","rel":"","context":"In "Windows"","block_context":{"text":"Windows","link":"https:\/\/www.winhelponline.com\/blog\/category\/microsoft\/windows\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2008\/03\/schedule-grayed.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":1509,"url":"https:\/\/www.winhelponline.com\/blog\/error-0x80070032-when-creating-a-system-restore-point-in-windows-vista\/","url_meta":{"origin":1593,"position":1},"title":"Error 0x80070032 when creating a System Restore point in Windows Vista","author":"Ramesh","date":"October 30, 2007","format":false,"excerpt":"When you try to create a System Restore point in Windows Vista, the following error may occur:Could not create the scheduled task for the following reason:The request is not supported. (0x80070032)This happens if the Windows Event Log and the Task Scheduler services are disabled. Follow these steps to fix the\u2026","rel":"","context":"In "Windows Vista"","block_context":{"text":"Windows Vista","link":"https:\/\/www.winhelponline.com\/blog\/category\/microsoft\/windows\/windows-vista\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.winhelponline.com\/articles\/content_images\/sr_vista.gif?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":80392,"url":"https:\/\/www.winhelponline.com\/blog\/task-scheduler-service-started-stopped\/","url_meta":{"origin":1593,"position":2},"title":"Task Scheduler Service on Local Computer Started and then Stopped","author":"Ramesh","date":"March 3, 2026","format":false,"excerpt":"The Task Scheduler service may fail to start, and the following error may occur when you try to start it manually using the Services MMC in Windows 10 or 11. The Task Scheduler service on Local Computer started and then stopped. Some services stop automatically if they are not in\u2026","rel":"","context":"In "Windows 10"","block_context":{"text":"Windows 10","link":"https:\/\/www.winhelponline.com\/blog\/category\/microsoft\/windows\/windows-10\/"},"img":{"alt_text":"task scheduler empty","src":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2026\/03\/task_scheduler_launch_empty.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2026\/03\/task_scheduler_launch_empty.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2026\/03\/task_scheduler_launch_empty.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2026\/03\/task_scheduler_launch_empty.png?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":1277,"url":"https:\/\/www.winhelponline.com\/blog\/view-reliability-history-is-blank-windows-7\/","url_meta":{"origin":1593,"position":3},"title":"Fix: “View Reliability History” (Reliability Monitor) is Completely Blank","author":"Ramesh","date":"November 27, 2013","format":false,"excerpt":"When you try to view the reliability history (Reliability Monitor) of your computer via Control Panel or Action Center, the reliability history page may be completely blank\/empty. This can happen if the Task Scheduler Service or RACTask scheduled job is disabled in your computer. To re-enable tracking of events by\u2026","rel":"","context":"In "Windows 7"","block_context":{"text":"Windows 7","link":"https:\/\/www.winhelponline.com\/blog\/category\/microsoft\/windows\/windows-7\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/archived2\/reliability-blank-2.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/archived2\/reliability-blank-2.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/archived2\/reliability-blank-2.png?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":10236,"url":"https:\/\/www.winhelponline.com\/blog\/task-scheduler-service-is-not-available-will-attempt-to-reconnect\/","url_meta":{"origin":1593,"position":4},"title":"Task Scheduler service is not available; will attempt to reconnect","author":"Ramesh","date":"July 8, 2019","format":false,"excerpt":"When you launch the Task Scheduler window, or when a specific task is run, the following error may pop up: Task Scheduler service is not available. Task Scheduler will attempt to reconnect to it. This error may occur although the Task Scheduler service is running. Task Scheduler service is not\u2026","rel":"","context":"In "Windows"","block_context":{"text":"Windows","link":"https:\/\/www.winhelponline.com\/blog\/category\/microsoft\/windows\/"},"img":{"alt_text":"ask scheduler service is not available. Task scheduler will try to reconnect to it","src":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2019\/07\/task-scheduler-service-not-available-2.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2019\/07\/task-scheduler-service-not-available-2.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/2019\/07\/task-scheduler-service-not-available-2.png?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":1366,"url":"https:\/\/www.winhelponline.com\/blog\/disk-defragmenter-dfrgui-not-launch-windows-7\/","url_meta":{"origin":1593,"position":5},"title":"Fix Disk Defragmenter (dfrgui.exe) Does Not Launch in Windows 7","author":"Ramesh","date":"May 2, 2015","format":false,"excerpt":"When you start Disk Defragmenter using any of these ways in Windows 7, nothing may happen except a brief blue circle (hourglass):Right-click on a hard disk drive-letter, click Properties, and click Defragment now... from the Tools tab.Access Disk Defragmenter from the Start menu shortcut or Search results.Run Dfrgui.exe from the\u2026","rel":"","context":"In "Windows 7"","block_context":{"text":"Windows 7","link":"https:\/\/www.winhelponline.com\/blog\/category\/microsoft\/windows\/windows-7\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.winhelponline.com\/blog\/wp-content\/uploads\/archived2\/w7-dfrgui-1.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/posts\/1593","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/comments?post=1593"}],"version-history":[{"count":0,"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/posts\/1593\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/media?parent=1593"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/categories?post=1593"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.winhelponline.com\/blog\/wp-json\/wp\/v2\/tags?post=1593"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}