Unable to create environment. Verification of your account is in progress.

This error message is common when trying to access AWS CloudShell, even for accounts that are not newly created. While the message suggests that account verification is in progress, this issue can occur for various reasons, not just for new accounts.

To resolve this issue, here are some steps you can try:

1. Wait for a couple of days, as the message suggests it may take up to two days for the verification process to complete.

2. Try changing your AWS region and attempt to access CloudShell again.

3. Refresh your AWS Management Console. Sometimes, browser-related issues like extensions or cookies can interfere with AWS services.

4. Try accessing CloudShell from a different browser or use an incognito/private browsing session.

If these steps don't resolve the issue, the best course of action is to contact AWS Support directly. You can do this by opening a support case under the "Account and billing" category. This type of support is available free of charge, even for users on the basic support plan. When contacting support, provide details about the error message you're seeing and any troubleshooting steps you've already taken.

Remember that AWS Support has access to account-specific information that community members don't, so they are best positioned to help resolve this particular issue.
Sources
" Unable to create the environment. Your account verification is in progress. This may take up to two days for new accounts. If you have any further questions, contact AWS Support . " | AWS re:Post
Unable to create the environment. | AWS re:Post
Unable to start CloudShell, even though the account is verified it shows this error "Unable to start the environment. You must verify your account before accessing CloudShell. To verify your account," | AWS re:Post
Cloud Shell error Unable to start the environment. You must verify your account before accessing CloudShell. | AWS re:Post