Hello, 

We deployed My Domain this morning and some of our users are having issues logging in. When they try to login from both login.salesforce.com and our custom domain they are redirected back to the login screen after they enter their credentials and press submit. On our admin side, it shows their log ins as successful, but they cannot actually get into the instance. 

We have tried clearing caches, disabling extensions, etc. but nothing has allowed them to log in. 

Has any one ever encountered this problem? Do you know a solution? 

When I went to my companies webpage there was an error message where there is usually a volunteer sign up sheet. I did not change any code recently and I am unsure why this message is appearing. 

URL No Longer Exists
You have attempted to reach a URL that no longer exists on salesforce.com. 

You may have reached this page after clicking on a direct link into the application. This direct link might be: 
• A bookmark to a particular page, such as a report or view 
• A link to a particular page in the Custom Links section of your Home Tab, or a Custom Link 
• A link to a particular page in your email templates 

If you reached this page through a bookmark, you are probably trying to access something that has moved. Please update your bookmark. 

If you reached this page through any of the other direct links listed above, please notify your administrator to update the link. 

If you reached this page through a link on our site, please report the broken link directly to our Support Team and we will fix it promptly. Please indicate the page you were on when you clicked the link as well as any other related information. We apologize for the inconvenience. 

Thank you again for your patience and assistance. And thanks for using salesforce.com!