Win 7 had Silverlight 3, 4 and 5. 4 was installed back in 5/2011, and 5 was installed today when I used the Fix It mentioned below.
Everything has been fine until yesterday!!
I am getting Netflix.com Player Error N8156 6003.
I tried running as admin.
I tried renamed the mspr.hds file, then I deleted the mspr.hds file in PlayReady (yes I found it just fine). I deleted the Cache folder in there too.
I tried the Fix It at https://support.netflix.com/en/node/211#gsc.tab=0.
I even tried adding netflix.com to the trusted sites under Internet Options.
I tried uninstalling Silverlight 4 and 5 trying all the other steps again.
After uninstalling Silver 4 and 5 I got this message on Netflix:
You're almost ready to watch ......Install the Microsoft Silverlight plug-in now — it only takes a minute.
That put 5 back on my pc but STILL getting the error message.