Popular password manager 1Password for Mac has been failing to launch over the weekend due to its developer certificate expiring, as the company notes in a blog post.
Customers were getting an error message when trying to start 1Password […] We knew our developer certificate was going to expire on Saturday, but thought nothing of it because we believed those were only necessary when publishing a new version. Apparently that’s not the case. In reality it had the unexpected side effect of causing macOS to refuse to launch 1Password properly …
The same issue has hit a number of other Mac apps …