I have just upgraded wordpress to version 4.7.3 on windows server 2008 R2. mysql is currently at version 5.1.72 and php was at version 5.6.

Everything worked fine.

I then added PHP 7.1.1 to IIS and changed to that version and now I get a 500 error on the web page.

I disabled all the plug ins and I still get the error. I reset the database password and I still get the error.

Is there anything else I can check/change/upgrade to resolve this?


Read more here: Site doesnt work once PHP changed to 7.1


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