236 Chapter 7 Web cache configuration300868-GI requested a Web site, but there was no response.Problem: The Web site requires cookies, and cookies are blocked.Solution: Enable cookies for the problem Web site. For details, refer to“Managing cookies for a particular Web site” on page 226.Problem: The Web site uses a protocol that is not compatible with proxy servers.Solution: Bypass the cache for the problem Web site. For details, refer to“Bypassing the cache for a Web site” on page 231.Problem: The originating Web server could be down or not responding.Solution: Send a request to the Web site again later.Problem: The Instant Internet unit is unable to communicate with the particularWeb Server.Solution: Bypass the cache for the problem Web site. For details, refer to“Bypassing the cache for a Web site” on page 231. If bypassing the cache does notsolve the problem, the originating Web server may be down or is not responding.(Be sure to reenable the cache for the problem Web site.)I blocked a site, but it still opens in a user’s Web browser.Problem: The user may have the local cache enabled on the user’s workstationand the content requested from the blocked site may still be in the local cache andis being displayed. For more information on the local cache, refer to “How Webcaching works with a user’s local cache” on page 203.Solution 1: Purge the user’s local cache. For details, refer to your Web browser’sdocumentation.I requested a Web page, but the content looks outdated.Problem: The Web content is being retrieved from the user’s local cache and isstale. For more information on the local cache, refer to “How Web caching workswith a user’s local cache” on page 203.