Good day, today I just want to leave evidence about an error that customer faced yesterday on production servers and that initially the affected users got the impressions that SharePoint was failing epically.
Picture your self-coming to work at 8am and as soon you log in into your computer and access your internet explorer the home page displays a message stating “Connection Refused”. And then you hit refresh over and over and always display this message.
Then you try another SharePoint application and got an “Unknown Host” error:
Tickets started coming like crazy and after reviewing SharePoint LOGS, IIS Application Pools, Timer Service, NLB, database connections, SQL aliases, SQL Server Agents, run commands to see if a DNS issue is, etc. and nothing happen decided to include infrastructure people.
Didn’t took them so long, they figure it out in less than 5 minutes, it was the Proxy settings, the proxy script file they use got corrupted (parent company made some changes overnight) therefore our beloved internet explorer was not able to hit SharePoint by any means.
Even though this was NOT a SharePoint error our 2.5 years of no downtime record and perception got impacted.