I'd like to begin with welcoming you to the Community. You've got me here to help share some information about selecting batch transactions in QuickBooks Online.
Are you trying to select batch transactions for expenses? If so, being unable to select the option for batch transactions to expenses has been reported as an ongoing issue. Our engineers are now working to get this resolved as soon as possible.
For now, I'd suggest reaching out to our Customer Care Team. They have the tool to pull up your account and add you to the list of the affected users and be able to receive updates about the issue.
However, if you're referring to select batch action for the banking, invoices and other sales transactions, you can try accessing your QuickBooks using a private browser. This is to verify if the issue is browser related.
Here are the different keyboard shortcuts to open a private browser:
Re: I'm trying to batch transactions . In banking i select all transactions to batch and it won't...
This still does not work....accept selected under batch actions is greyed out.
I need to get this done for my accountant and I will not spend the time to only accept 5 transactions at a time. This is ridiculous. The only way the accept selected under batch actions in banking is to only select 5 transactions at a time and then (and only then) is the accept selected an option and not greyed out... I need to accept the the transactions in order to get taxes done by my account. Please advise ASAP.