{"id":1028,"date":"2017-06-05T20:40:34","date_gmt":"2017-06-05T19:40:34","guid":{"rendered":"http:\/\/axotron.se\/blog\/?p=1028"},"modified":"2017-06-05T20:41:16","modified_gmt":"2017-06-05T19:41:16","slug":"why-a-cmd-window-flashes-and-how-to-solve-it","status":"publish","type":"post","link":"https:\/\/axotron.se\/blog\/why-a-cmd-window-flashes-and-how-to-solve-it\/","title":{"rendered":"Why a CMD window flashes and how to solve it"},"content":{"rendered":"

I have had a disturbing issue at work for a couple of days. Once every hour, a black window (probably a CMD window) would pop up for a fraction of a second on the screen and then disappear. I had no idea whether this was a virus, spyware, some other kind of malware or something benign.<\/p>\n

Fortunately, a colleague of mine had the google skills to find the cause and the solution to the problem. It turned out this was caused by a scheduled task from Microsoft Office called OfficeBackgroundTaskHandlerRegistration. By starting the Task Scheduler and drilling down to Task Scheduler Library -> Microsoft -> Office, this task is shown and it can be disabled by right clicking on it and selecting Disable:<\/p>\n

\"\"<\/a>
Where to find the offending scheduled task<\/figcaption><\/figure>\n

Some more googling reveals that this is a bug Microsoft is aware of and that it probably will go away in some future update:<\/p>\n

https:\/\/answers.microsoft.com\/en-us\/msoffice\/forum\/msoffice_officeinsider-mso_win10\/officebackgroundtaskhandlerregistration-flashes-a\/2600497e-78e4-41a1-9040-461cd2c3ea13<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

I have had a disturbing issue at work for a couple of days. Once every hour, a black window (probably a CMD window) would pop up for a fraction of a second on the screen and then disappear. I had no idea whether this was a virus, spyware, some other kind of malware or something … Continue reading Why a CMD window flashes and how to solve it<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-1028","post","type-post","status-publish","format-standard","hentry","category-pc"],"_links":{"self":[{"href":"https:\/\/axotron.se\/blog\/wp-json\/wp\/v2\/posts\/1028","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/axotron.se\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/axotron.se\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/axotron.se\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/axotron.se\/blog\/wp-json\/wp\/v2\/comments?post=1028"}],"version-history":[{"count":3,"href":"https:\/\/axotron.se\/blog\/wp-json\/wp\/v2\/posts\/1028\/revisions"}],"predecessor-version":[{"id":1032,"href":"https:\/\/axotron.se\/blog\/wp-json\/wp\/v2\/posts\/1028\/revisions\/1032"}],"wp:attachment":[{"href":"https:\/\/axotron.se\/blog\/wp-json\/wp\/v2\/media?parent=1028"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/axotron.se\/blog\/wp-json\/wp\/v2\/categories?post=1028"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/axotron.se\/blog\/wp-json\/wp\/v2\/tags?post=1028"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}