Cookie problem - Login backend

Question

I have two Magento websites in the same domain, store.com and us.store.com.

For 24 hours I can't login in the backend. Only If I use a plugin browser like anonimoX, which changes my IP the login works. So I think it is a problem witht cookies.

Answer 1

Go in System > Configuration > Web > Session Cookie Management and set a different cookie domain for your two websites.

• First website: store.com (make sure it is NOT .store.com)
• Second website: us.store.com

Flush your cache (both Magento and browser) and try again, it should fix it.