Unexpected Error

[clifford_cooley]

Quite frequently I've been getting this Unexpected Error (404 error) while logging in to both w7forums and windows10forums. The error happens around the same time of day, 2 to 4 AM central time zone.

I've ignored it several times and come close to reporting it a few other times. I finally decided to report it tonight.

 

[Regedit32]

Hi Clifford,

What browser are you using to log in with when you get this error?

Regedit32

 

[clifford_cooley]

Firefox 43.01

After a few minutes the error goes away and it is the next day before I see it again.

 

[Regedit32]

Hi Clifford,

It's possible in the preferences for your Firefox browser the network.http.sendRefererHeader is set to 0.

Depending on how a webserver is set up this can cause a default error to be triggered, usually 404, but occasionally a 403 error too.

To resolve this simply:

• open the Firefox browser
• In the Location/Address bar type about:config and press ENTER key
  • Alternately click Tools | Options | Advanced | General | then click the Config Efitor button
• You ought to see a long list of preferences. Scroll down to location network.http.sendRefererHeader
  • If its value is 0 or 2, then left double-click it and set value to 1 (i.e. network.http.sendRefererHeader: 1)

Note: If you cannot see network.http.sendRefererHead at all in the preference list then add it to the list by doing the following:

• Right click in a blank area of page (or select Context Menu)
• Select New Type of Preference
  • You will be prompted for the preference name and initial value.
  • Enter: network.http.sendRefererHeader for the name and 1 for the value

Sources:

• http://kb.mozillazine.org/Network.http.sendRefererHeader
• http://kb.mozillazine.org/Editing_configuration
• http://kb.mozillazine.org/About:config

Regards,

Regedit32

 

[Ian]

Thanks for the heads up Clifford - if it happens again, if you could let me know the exact date/time it happens (GMT if possible- as that's the server time) and I'll look at the logs and see what happens at this end .

 

[clifford_cooley]

Will do.

 

[clifford_cooley]

4/3/16 8AM UTC

 

[Ian]

Thanks Clifford, this hasn't shown up in the usual logs - so I'll need to see why that is. I'll add a MySQL monitor and see what's going on .

 

[Ian]

It looks like nothing appeared in the main logs as everything is still running, but the MySQL table is locked during a slow query that happens around this time. I've got the query from the log and I'm seeing if I can re-factor it to prevent this from happening.