What are CLT.sig Error Messages?

General CLT.sig Runtime Errors

CLT.sig file errors often occur during the startup phase of Norton Security Premium, but can also occur while the program is running. These types SIG errors are also known as “runtime errors” because they occur while Norton Security Premium is running. Here are some of the most common CLT.sig runtime errors:

• CLT.sig could not be found.
• CLT.sig error.
• CLT.sig failed to load.
• Error loading CLT.sig.
• Failed to register CLT.sig / Cannot register CLT.sig.
• Runtime Error - CLT.sig.
• The file CLT.sig is missing or corrupt.

Most SIG errors are due to missing or corrupt files. Your CLT.sig file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Norton Security Premium), or deleted by a malware infection. Furthermore, CLT.sig file corruption could be caused from a power outage when loading Norton Security Premium, system crash while loading or saving CLT.sig, bad sectors on your storage media (usually your primary hard drive), or malware infection. Thus, it’s critical to make sure your anti-virus is kept up-to-date and scanning regularly.

How to Fix CLT.sig Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your CLT.sig issue. These troubleshooting steps are listed in the recommended order of execution.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

1. Hit the Windows Start button
2. When you see the search box, type "System Restore" and press "ENTER".
3. In the search results, find and click System Restore.
4. Please enter the administrator password (if applicable / prompted).
5. Follow the steps in the System Restore Wizard to choose a relevant restore point.
6. Restore your computer to that backup image.

If the Step 1 fails to resolve the CLT.sig error, please proceed to the Step 2 below.

You can uninstall Norton Security Premium software by following these instructions (Windows XP, Vista, 7, 8, and 10):

1. Hit the Windows Start button
2. In the search box, type "Uninstall" and press "ENTER".
3. In the search results, find and click "Add or Remove Programs"
4. Find the entry for Norton Security Premium 22.6.0.142 and click "Uninstall"
5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Norton Security Premium software.

If this Step 2 fails as well, please proceed to the Step 3 below.

Norton Security Premium 22.6.0.142

Symantec Corporation

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many CLT.sig error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

1. Hit the Windows Start button
2. In the search box, type "Update" and press "ENTER".
3. In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
4. If updates are available for download, click "Install Updates".
5. After the update is completed, restart your PC.

If Windows Update failed to resolve the CLT.sig error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

If Those Steps Fail: Download and Replace Your CLT.sig File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate CLT.sig file version. We maintain a comprehensive database of 100% malware-free CLT.sig files for every applicable version of Norton Security Premium. Please follow the steps below to download and properly replace you file:

1. Locate your Windows operating system version in the list of below "Download CLT.sig Files".
2. Click the appropriate "Download Now" button and download your Windows file version.
3. Copy this file to the appropriate Norton Security Premium folder location:
   
   Windows 10: C:\Program Files (x86)\Norton Security with Backup\Engine\22.6.0.142\SPManifests\
   
4. Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.

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