Message: Attempt to write a read only database

Reference Number: KB-03008
Last Modified: September 16, 2015

The information in this article applies to:

Chief Architect Premier or Chief Architect Interiors

Home Designer Professional or Home Designer Architectural or Home Designer Suite or Home Designer Interiors or Home Designer Essentials


When I try to launch my Chief Architect software program, I receive a warning that states:

"..\source\LibraryDatabase.cpp(2577): Error #272032176
attempt to write a readonly database"

Why am I receiving this error message, and how do I resolve it?


If you are receiving this warning, then it means that your user account does not have permission to write files to a location that the program needs to be able to access.

To resolve the error on a Windows computer

  • If you have recently upgraded your Microsoft operating system, the most common reason for receiving this error is that there was an issue migrating the directory permissions forward correctly.

    If this is the case, to correct the issue please see Microsoft knowledge base article #2623670; scroll down to the Resolution section for Issue 3 entitled "I cannot open a file or folder after I upgrade to a new version of Windows."

  • Note: The resolution steps for Windows 8 also apply to Windows 10, although the Microsoft article had not yet been updated as of the creation of this Chief Architect article.

  • If you have not recently upgraded your Microsoft Windows operating system, then you are likely receiving this warning because you are signed in to a limited user account. If possible, sign in under the Administrator account instead and attempt to launch the software, or contact your IT department to adjust your permissions accordingly.

  • If neither of the above options resolve the warning, right-click on the program icon and select Run as Administrator.

If you are receiving this error on a Mac computer

  • Check to ensure that you are signed in to the computer with an Account that has administrative rights. If you are not, contact your IT department to request that your permissions be adjusted accordingly.

  • If you are signed in to the computer as an Administrator, then you may need to repair the disk permissions. Please see this Apple support article which explains how to use this feature: