I'd be happy to help you disable read-only for all of your QuickBooks files.
I appreciate that you've mentioned that you've already disabled this for your files. Since you're still unable to access the deactivated ledgers, it would be a good idea to set QuickBooks to run as Admin. The steps below will guide you through the process:
Right-click the QuickBooks Icon.
Go to the Compatibility Tab.
In the Privilege Level section, check the Run this program as an Administrator box.
Click on OK.
From there, reopen QuickBooks and check if you can access the ledger accounts. For additional insight and recommended solutions, I'm also including this article: Message: This file is set to read-only
That should do it! With these resources, I'm confident that you'll be able to check the deactivated accounts in no time.
Please keep in touch if there's anything else I can help you with. Thanks again for reaching out, wishing you and your business all the best.
I'm here to help share some steps to get this issue sorted out and get you back to business.
If you're unable to remove the read-only message after performing the steps given by my peer above, I'd suggest running the verify and rebuild process. Verifying the data self-identifies data issues within a company file while rebuilding the data resolves data integrity issues.
To do that:
Click on File at the top menu bar.
Select on Utilities.
Click on Rebuild Data.
Select OK when you see Rebuild has completed.
Once done, you can proceed with verifying the data.
Click on File.
Select on Utilities.
Click on Verify Data.
If you see QuickBooks detected no problem with your data, select OK. You may continue using your company file.
However, if the issue persists after trying these steps, I'd suggest reaching out to our Customer Care Team. They have the capability to do a remote viewing session that can help determine the main cause of this issue.
This should get you on the right track.
Please know that I'm just a reply away if there's anything else you need. I'll be around to help. Have a great weekend.