HTTP 403 Error behind transparent proxy

[Guest]

[pamoedo]

Hy everyone, i have a problem for weeks on endian 2.4.1 up to date, suddenly the http proxy starts to block all google, apple and microsoft http querys (among others) without any change in the contentfilter.

Finally (but i'm not sure) i solved it unchecking all useragents options on the access policy filter, can anybody confirm this solution? and anybody knows the origin of the problem?

Thanks in advance.