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Most of my extensions are marked as compatible with 4.7 but do not explicitly say they will work with 5.0, 5.1, etc. Can I safely upgrade CiviCRM and continue to use the extensions?

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  • Welcome to StackExchange! You are more likely to get a helpful reply if you could provide some more detail in your question. – William Mortada Jun 18 '18 at 16:49
  • Without any specific extensions listed in your question, hard to say exactly, but I'd say that MOST extensions will work fine in 5.1 if they were stated to work in 4.7. The version number has changed but there were not many big, extension breaking changes. – jackrabbithanna Jun 18 '18 at 17:24
  • I can confirm for example that civicrm.org/extensions/cdn-tax-receipts works even though it only says 4.7. I have it running on a 5.2.1 site. – Demerit Jun 20 '18 at 13:07
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Because 5.0 does not include breaking changes, it is considered equally compatible with 4.7 extensions. There is always minor risk of breakage when upgrading software, but 4.7 to 5.0 is not considered a major upgrade.

From https://lab.civicrm.org/dev/release/issues/1#note_2843

  • In the 4.x series, tags mean the same as today. (Exact-match to version. An extension declaring 4.6 is not displayed for download on 4.7.)
  • In the 5.x series, tags imply forward compatibility. (An extension declaring 5.2 is displayed on 5.2, 5.3, etc. But not on 5.0.)
  • To bridge them, 4.7 is forward compatible with 5.0. (An extension declaring 4.7 is displayed on 4.7, 5.0, 5.1, etc.)
  • As today, a consumer sees the newest extensions that are compatible with their version.
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It is difficult to answer your question without detailed knowledge of your system and the extensions that you have installed.

The best way to find out if there are any issues is to take a copy of your site and upgrade this in a test environment. I would recommend that you do this in any case before applying any updates to your system.

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