Windows Update error 80246005


If you receive Windows Update error 80246005 while checking for updates, it usually means either you can't save files to the Catroot2 folder or that the Cryptographic Service wasn't started or isn't working properly. Follow the steps below to correct these problems.

To allow files to be saved to the Catroot2 folder

Windows Update might fail if Windows can't copy files to the Catroot2 folder or replace files that are in that folder (in other words, if the folder or its files are set to read-only). To change that folder so you can write files to it, follow these steps:

  1. Click the Start button Picture of the Start button, and then, in the search box, type command prompt.
  2. In the list of results, right-click Command Prompt, and then click Run as Administrator. Administrator permission required If you're prompted for an administrator password or confirmation, type the password or provide confirmation.

  3. At the command prompt, type attrib -h -s -r c:\windows\system32\catroot2 (where c:\ is the drive where Windows is installed), and then press Enter.

  4. Next, type attrib -h -s -r c:\windows\system32\catroot2\*.* (where c:\ is the drive where Windows is installed), and then press Enter.

  5. Type Exit, and then press Enter to close the Administrator: Command Prompt window.

To check and restart the Cryptographic Service

  1. Open Administrative Tools by clicking the Start button Picture of the Start button, and then clicking Control Panel. In the search box, type administrative tools, and then click Administrative Tools.

  2. Double-click Services. Administrator permission required If you're prompted for an administrator password or confirmation, type the password or provide confirmation.

  3. Click the Name column heading to sort the names in reverse order. Find the Windows Update service. Note the status of the selection (the status appears in the third column). Right-click Windows Update, and then do one of the following:

    • If Start is available, click Start.

    • If Restart is available, click Restart.

  4. Click the Name column heading to sort the names back in alphabetical order, and then click Cryptographic Services.

  5. Note the status of the selection (the status appears in the third column). Right-click Cryptographic Services, and then do one of the following:

    • If Start is available, click Start.

    • If Restart is available, click Restart.

  6. Close the Services dialog box.

After trying either of these procedures, go to the Windows Update website and try checking for updates again.

Note

  • While the primary cause of this error is usually what’s described above, some programs might also cause this error by preventing the Windows Update Services (SVCHOST) from accessing the Internet. Programs that might do this include firewalls, antispyware software, web accelerators, Internet security or antivirus programs, and proxy servers. If you have any of these programs running, you might need to turn them off while downloading and installing updates. Microsoft recommends you turn them back on after updating your computer. See Windows Update error 80072efd for steps you can take to change Windows Firewall settings.

Error codes this applies to:

  • WindowsUpdate_80246005

  • 0X80246005



Need more help?