# Invalid server certificate when registering purchase

**URL:** <https://discourse.devontechnologies.com/t/invalid-server-certificate-when-registering-purchase/84787>\
**Category:** DEVONthink\
**Created:** [August 18, 2025, 7:32pm UTC](https://discourse.devontechnologies.com/t/invalid-server-certificate-when-registering-purchase/84787 "2025-08-18T19:32:10Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![mbrand](https://discourse.devontechnologies.com/letter_avatar_proxy/v4/letter/m/49beb7/32.png) [@mbrand](https://discourse.devontechnologies.com/u/mbrand)\
**Post date:** [August 18, 2025, 7:32pm UTC](https://discourse.devontechnologies.com/t/invalid-server-certificate-when-registering-purchase/84787/1 "2025-08-18T19:32:10Z")

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I recently purchased a license for Devonthink, and am having an issue getting it registered. When I enter my name and product key, I get an error indicating that the certificate for the server is invalid (error message screenshot follows). Pressing the only button (OK? - seems like there should be ok and cancel, but…) just dumps me back to the registration screen. If it is a problem on my end, any ideas?

 ![Screenshot 2025-08-18 at 9.12.06 AM](https://devontech-discourse.s3.dualstack.us-east-1.amazonaws.com/uploads/original/3X/4/f/4f2285967bb5079b30058ff0dd97a17f15205219.png)

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**Author:** ![BLUEFROG](https://discourse.devontechnologies.com/user_avatar/discourse.devontechnologies.com/bluefrog/32/135_2.png) [@BLUEFROG](https://discourse.devontechnologies.com/u/BLUEFROG)\
**Post date:** [August 18, 2025, 7:32pm UTC](https://discourse.devontechnologies.com/t/invalid-server-certificate-when-registering-purchase/84787/2 "2025-08-18T19:32:57Z")

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Welcome @mbrand  
Thanks for the report. Please open a [support ticket](https://helpdesk.devontechnologies.com) and I will assist you there.

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**Author:** ![mbrand](https://discourse.devontechnologies.com/letter_avatar_proxy/v4/letter/m/49beb7/32.png) [@mbrand](https://discourse.devontechnologies.com/u/mbrand)\
**Post date:** [August 18, 2025, 7:56pm UTC](https://discourse.devontechnologies.com/t/invalid-server-certificate-when-registering-purchase/84787/3 "2025-08-18T19:56:57Z")

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Thank you. I added it as support ticket #829182.

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**Author:** ![Saphi](https://discourse.devontechnologies.com/letter_avatar_proxy/v4/letter/s/82dd89/32.png) [@Saphi](https://discourse.devontechnologies.com/u/Saphi)\
**Post date:** [August 31, 2025, 4:51am UTC](https://discourse.devontechnologies.com/t/invalid-server-certificate-when-registering-purchase/84787/4 "2025-08-31T04:51:29Z")

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I do have the exact same issue… ☹ very disappointing…

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**Author:** ![BLUEFROG](https://discourse.devontechnologies.com/user_avatar/discourse.devontechnologies.com/bluefrog/32/135_2.png) [@BLUEFROG](https://discourse.devontechnologies.com/u/BLUEFROG)\
**Post date:** [August 31, 2025, 4:52am UTC](https://discourse.devontechnologies.com/t/invalid-server-certificate-when-registering-purchase/84787/5 "2025-08-31T04:52:11Z")

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This has already been discussed on our blog…

> **[DEVONtechnologies | Problems with Security Certificate](https://www.devontechnologies.com/blog/20250821-problems-untrusted-security-certificate-ssl-tsl)**
>
> DEVONtechnologies develops DEVONthink, DEVONagent, and other Mac and iOS apps for document and information management and web research.