![\"\"](\"https:\/\/pariswells.com\/blog\/wp-content\/uploads\/2019\/02\/img_5c6b8b6481d00.png\")
<\/p>Clicking on any website links in Outlook 2010 in Windows 10\/2016 would cause this prompt to appear:<\/p>
<\/p>
Ticking Always use this app doesn\u2019t help as clicking on the link again causes the prompt to re-appear. After doing some digging, I initially thought it was due to this documented issue with Citrix and Microsoft Server 2016 – https:\/\/support.citrix.com\/article\/CTX228597<\/p>
However after spending more time than I care to admit looking at the above, the fix was something completely unrelated to the above article. Implementing a few simple missing registry keys outlined in this article resolves the problem: https:\/\/support.microsoft.com\/en-us\/help\/3094186<\/p>
TLDR the below keys are missing from Windows 10 which are present in earlier versions of Windows, which is what causes this prompt to constantly re-appear. To address it, create the below two registry keys:<\/p>
HKEY_CLASSES_ROOT\\htmlfile\\shell\\opennew
HKEY_CLASSES_ROOT\\htmlfile\\shell\\opennew\\command<\/p>
Modify the value of the (Default) registry setting:<\/p>
Change value of (Default) to rundll32.exe url.dll,FileProtocolHandler %1 to open links in a new tab
Change value of (Default) to “C:\\Program Files\\Internet Explorer\\IEXPLORE.EXE” %1 to open links in a new window<\/p>","protected":false},"excerpt":{"rendered":"
Clicking on any website links in Outlook 2010 in Windows 10\/2016 would cause this prompt to appear:Ticking Always use this app doesn\u2019t help as clicking on the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3961","post","type-post","status-publish","format-standard","hentry","category-research"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t