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IE No Cache Workarounds

Occasionally, IE decides not to cache new pages even when the pages say they can be cached. This is completely acceptable behavior for a browser, but because TWiki relies on cache behavior for the Edit -> Preview cycle, this can be inconvinent. Below is a list of reasons that IE might not cache pages and workarounds to try and fix them.

1. Security settings prevent caching of pages.

If the pages you are accessing are coming from SSL or over a VPN, IE may be set to intentionally not cache these pages. You can change this by going to Tools->Internet Options->Advanced, and in the Security section near the bottom, make sure "don't store encrypted pages to disk" is unchecked -- then restart your browser.

2. Temporary Internet Files directory is full

If IE has filled the Temporary Internet Files directory, it often will decide not to cache new cachable pages unless they are already present in the cache. This might be a bug, or it might be some really fancy least-frequently-used replacement algorithm where it is deciding that your new one-off pages are not frequently used enough to push something out of the cache.

Either way, if this is causing some pages not to cache and getting in the way of your TWiki Editing, clearning your Temporary Internet Files will often fix the problem. Goto Tools->Internet Options and in the "Temporary Internet Files" box click "Delete Files...".

-- DavidJeske - 07 Jul 2003

Topic revision: r1 - 2003-07-07 - DavidJeske
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