SharePoint 403 Forbidden Error

Recently, some good ends of SharePoint in the company experienced problems. Generally, an error occurs when a member adds a calendar.
The server event number is 1314, indicating that no authorization is available for viewing. Other functions can be used normally,
The administrator can also add a calendar. The most strange thing is that after the Administrator adds a calendar, other people can perform the operation.

After a random search on the Internet, it may be caused by the installation of the. NET Framework fix.
According to the proposed scheme, the bin directory permission under the SharePoint directory is changed, so that the general user has the permission to read.
After modification, the system runs normally temporarily without any previous errors.

Http://objectmix.com/sharepoint/298556-users-receive-intermittent-forbidden-errors-event-id-1314-a-3.html

Make sure your normal user accounts can access the/bin directory in
The
Webapplication:
-Open an Windows Explorer for the/bin directory
Your webapplication and
Display its properties.
-On the Security tab, add
The local server group "Server \ Users" to
List, ("Server \ Users" usually
Contains "domain \ Users") and select
Following rights for "Server \ Users ":
"Read & execute", "list folder
Contents "," read ". Click OK to apply
New settings.

The 403's shoshould be gone.
Do this for every
Webapplication in your farm.

Event Type: Information
Event Source: ASP. NET 2.0.50727.0
Event category: Web event
Event ID: 1314
Date: 2009-1-22
Time: 16:15:18
User: N/