Unknown apps greyed out after update to Oreo?

miles4000

Active member
Apr 8, 2013
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After recently upgrading my Sprint Samsung S7 to Oreo 8.0, I lost the Amazon Appstore app. I noticed this when trying to start an app I got from the store years ago (mSecure). So when I went to re-install Amazon Appstore, it won't let me do it because "Install Unknown App" list apps are all grey out? I called Samsung but they were no help. They mentioned maybe my Corp Email is locking this out now? Any ideas on how I can get around this issue?
 

Rukbat

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Feb 12, 2012
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Go into Settings and look for unknown. Then look for "install unknown apps". Then select whichever app you're using to install the Amazon App Store app (your browser?)
 

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