Windows:
From the menu bar at the top of the window, select "Edit" and scroll
down to preferences:
On the left panel, locate the plus (+) sign next to "Advanced"

Click on the plus (+) sign and the Advanced menu will expand:
select "Cache" from this list by clicking on the word "Cache":
Clear the Cache by clicking the button and, under "Compare the page in
the cache to the page on the network:," select
"Every time I view the page" by clicking on the round button to the
left of it.

Click "OK" to save these settings.
Macintosh:
From the menu bar at the top of the window, select "Mozilla" and
scroll down to preferences:
On the left panel, locate the Arrow (
)
next to "Advanced"

Click on the Arrow (
)
and the Advanced menu will expand:
select "Cache" from this list by clicking on the word "Cache":
Clear the Cache by clicking the button labelled "Clear Cache"

Under "Compare the page in the cache to the page on the network:,"
select
"Every time I view the page" by clicking on the round button to the
left of it.
Click "OK" to save these settings.
Continue with Step 3 of proxy configuration instructions.
Return to the Proxy
Page
Return to the Library Home Page