CiviCRM no longer officially supports Drupal 6.x. as of version 4.2 but seems that more than one is running versions above 4.1 with Drupal 6 site.
Up to what CiviCRM version I can upgrade my Drupal 6 site without suffering any incompatibility?
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Sign up to join this communityPete is right that even recent versions of CiviCRM (certainly in the 4.6.x series) work with Drupal 6 sites. The "no longer officially supports" issue is that the core team won't go out of their way to make D6-specific fixes.
That said, I have encountered problems with new installations on Drupal 6, but this has been for testing--why else would someone build a new site on Drupal 6?
We have Drupal 6 sites running just fine on the 4.6.x series. I don't know where you read that 'civicrm no longer supports drupal 6" - is it not more the case that Drupal no longer supports Drupal 6 and hence all module information concerning D6 is incorrect
I have been running Civi 4.7.6 on a Drupal 6.38 production site. Seems to be working just fine :-) Am busy installing to security upgrade 4.7.7 now so hold thumbs nothing breaks :-)