Document SanitizeOnShutdown Exceptions (Firefox 154) - #237
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Jul 27, 2026
| ## Values | ||
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| - `Allow` is a list of origins (not domains) where cookies are always allowed. You must include `http` or `https`. | ||
| As of Firefox 154, using `Allow` to also exempt sites from clearing on shutdown is deprecated. Firefox migrates those origins to the new mechanism, but you should configure [`SanitizeOnShutdown`](/reference/policies/sanitizeonshutdown/)'s `Exceptions` instead. |
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| As of Firefox 154, using `Allow` to also exempt sites from clearing on shutdown is deprecated. Firefox migrates those origins to the new mechanism, but you should configure [`SanitizeOnShutdown`](/reference/policies/sanitizeonshutdown/)'s `Exceptions` instead. | |
| As of Firefox 154, using `Allow` to exempt sites from clearing on shutdown is deprecated. Firefox migrates origins to the new mechanism, but you should use [`SanitizeOnShutdown`](/reference/policies/sanitizeonshutdown/)'s `Exceptions` instead. |
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