Certificate verify failed: unable to get local issuer certificate

[write scribe]

Does anyone know how to fix this?

 

[Lufbrarunner]

In what circumstances does this error arise?

 

[write scribe]

When I try to access a trusted university site where I work. INo issue anywhere else I visit, It started after the latest OS upgrade a few days ago. 3 university IT pros tried to he lp, but now conclude they believe it is Apple-related.

 

[DanL]

The machine will fail to verify a certificate if it has expired. It means that Apple won't guarantee you can trust the site. But you can require that your machine trust it.

Change the trust settings of a certificate in Keychain Access on Mac

In Keychain Access on your Mac, you can view or change a certificate’s trust policies.

support.apple.com

You can also just erase the certificate and hope that next time you go to the site it'll reload a valid one.

 

[write scribe]

Does anyone know how to fix this?

 

[write scribe]

I have a GREAT SOLUTION to the BAD DATA 502 issue, thanks to an Apple tech consultant. And it is a rather simple one. Create a "NEW USER" account for yourself on your MacBook. Then, whenever you need to log into the problematic web site, simply use it instead id your regular user account. Now, if I can just learn how to share all files between these two user accounts, life will be even simpler.

To add a user

1. On your Mac, choose Apple menu > System Preferences, then click Users & Groups . ...
2. Click the Add button below the list of users.
3. Click the New Account pop-up menu, then choose a type of user. ...
4. Enter a full name for the new user. ...
5. Enter a password for the user, then enter it again to verify. ...
6. Click Create User.
7. Then log into the problematic web site as usual

GOOD LUCK
Brendan

 

[DaveH]

I use

I have a GREAT SOLUTION to the BAD DATA 502 issue, thanks to an Apple tech consultant. And it is a rather simple one. Create a "NEW USER" account for yourself on your MacBook. Then, whenever you need to log into the problematic web site, simply use it instead id your regular user account. Now, if I can just learn how to share all files between these two user accounts, life will be even simpler.

To add a user

1. On your Mac, choose Apple menu > System Preferences, then click Users & Groups . ...
2. Click the Add button below the list of users.
3. Click the New Account pop-up menu, then choose a type of user. ...
4. Enter a full name for the new user. ...
5. Enter a password for the user, then enter it again to verify. ...
6. Click Create User.
7. Then log into the problematic web site as usual

GOOD LUCK
Brendan

I used this when my MacBook would not open an AEG power tools .com.au web site - it now works

Can I some how repair the old logo in so is works again?