Excel .xlsx files won't open on iOS devices after 11.3 release

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  • Updated 1 year ago
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After a recent iOS update to iPhone and iPads, Excel document file attachments of type .xlsx fail to open on iPhones and iPads.  The old .xls files still open. 

This happened on iOS release 11.3.  I see that the next release is now out (11.3.1) but that did not fix the problem.

Anyone else have this same problem?  Any ideas?  
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Posted 1 year ago

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John Lacombe

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I actually use a different App builder, and their support sent me this link to you as proof this is an Apple issue and "nothing they could do."  However, I figured I would share what I've learned on my own.

I think it is related to the new Safari Security Settings. Until Apple fixes the problem, a possible work around for the User to Turn off Fraudulent Website Warning in Safari Privacy & Security Settings.

Hope this helps.

John Lacombe

OMG! Thx worked.
Super Appreciated