My sharepoint farm is getting very slow these days, upon analyzing the log i found there are 401 errors on css,js and axd files like "NetworkError: 401 Unauthorized - http://servername/ScriptResource.axd?d=Ifc2kqLYbVl7lW0eMbeebX4FMq2a0Ef-lTJTl7RpRxI68bR4C11AFSt-fcE8-WydexgIDdeXWUqGAd_Up9ecNZFl64Q_d4dj8h8cEQ5TP9RBz5oGliPo6h_ywb1GfC5m4kO0TmU0HBARFWzmvvqPVlRTzLwmSH7YcV7ksS0zDpF2m-V60&t=ffffffffb4a8867a" "NetworkError: 401 Unauthorized - http://servername/_layouts/1033/core.js?rev=mHKsOQ0iU3Q5jdm9OZNDdg%3D%3D" "NetworkError: 401 Unauthorized - http://servername/_layouts/1033/search.js?rev=yqBjpvg%2Foi3KG5XVf%2FStmA%3D%3D" Can any one help me to find the root cause? aju

Hi, According to your description, what do you select authentication method, NTLM? In my opinion, the root cause is the way that NTLM works. I suggest that you should switch to Kerberos. Please have a try. Best regards David Hu

Hi David, Thank you for your reply but i don't think i can do it soon, is there a temporary solution for this? Thanks, Mathewaju

Hi Aju, Pls follow this link, Hope you will get an idea. http://stackoverflow.com/questions/4827803/very-slow-sharepoint-authentication-problem-getting-401-errors-on-images-and Regards, Nithyanandan.

hi Nithyanandan, That is exactly my problem, do you have any links to how to cache these files? Thanks, Ajuaju

Can someone please help in this matter please?aju

Is there any other solution other than changing the authentication method?aju