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Major DNS issue - Mac Forums no help


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WarmCurb's Avatar
WarmCurb WarmCurb is offline
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08-May-2012, 03:53 PM #1
Major DNS issue - Mac Forums no help
The various Mac Forums I've tried have attempted to help (can post their solutions if needed), but none worked. My issue has to deal with DNS settings, I think.

The problem:

- Security Certificates: Pop up daily for Facebook mostly, but also Twitter. I will click Continue, which takes me to...
- 404 Error/Page Not Found Error: After the Certificate error mentioned above, this happens. Mostly to YouTube. It will stay like this for a few hours. I've cleared cache, rebooted, etc. etc. Nothing works.
- Images turn into little blue boxes with a question mark in them. **When this happens, it's an indication that a Certificate box will pop up out of the blue.
- Google.com (right now): Invalid URL

The requested URL "/", is invalid.
Reference #9.df260e6b.1336506889.420cf4f


So what can I do? It happens on both my Macbook Pro and iMac - both connected wirelessly to a Linksys router/cable modem.
Headrush's Avatar
Member with 2,161 posts.
 
Join Date: Feb 2005
Experience: Advanced
08-May-2012, 07:01 PM #2
Maybe use /Application/Utilities/Keychain Access and remove any certificates for those web sites which are a problem.

You might want to use /Applications/Utilities/Terminal to do the following:
Code:
scutil --dns
Make sure your DNS server is right.

Code:
dscacheutil -flushcache
To clear out old and possibly modified DNS entries.
WarmCurb's Avatar
WarmCurb WarmCurb is offline
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09-May-2012, 08:03 PM #3
Thanks. Will this help even if it happens in all browsers - Safari, Chrome and Firefox?
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WarmCurb WarmCurb is offline
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16-May-2012, 12:08 AM #4
In terminal, do I just type in "scutil --dns" and hit Enter?
Headrush's Avatar
Member with 2,161 posts.
 
Join Date: Feb 2005
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16-May-2012, 06:29 AM #5
Quote:
Originally Posted by WarmCurb View Post
Thanks. Will this help even if it happens in all browsers - Safari, Chrome and Firefox?
Yes.

Quote:
Originally Posted by WarmCurb View Post
In terminal, do I just type in "scutil --dns" and hit Enter?
Yes.
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