Symptoms
- Cannot deploy a patch with Shavlik Protect
- You see the error:
Patch does not appear to be digitally signed
Cause
When deploying a patch, Protect verifies that the patch is digitally signed by Microsoft. If the signature cannot be verified, deployment fails. This functionality is a security feature in Protect.
This issue may occur when the complete patch file fails to download and the patch does not contain a digital signature. If the patch signature cannot be validated during the patch download process, the partial patch is automatically deleted from the download center.
If a patch download fails repeatedly, it is possible that the partially downloaded patch is cached in a proxy server or firewall between your console and the vendor download center. This issue may also occur if the partial patch is cached in the console's Internet Explorer browser cache.
Resolution
To resolve this issue:
- Open Internet Explorer on the console machine
- Click Tools> Internet Options> Temporary Internet Files.
- Click Delete Files.
- Try downloading the patch again.
Note: By default, the patch files are located at:
- v.9x on Windows Vista, 2008, Windows 7 - C:\ProgramData\LANDesk\Shavlik Protect\Console\Patches
- v.9x on Windows XP, Windows 2003 - C:\Documents & Settings\All Users\Application Data\LANDesk\Shavlik Protect\Console\Patches
- v.8x on Windows Vista, Windows 2008, Windows 7– C:\ProgramData\Shavlik Technologies\NetChk\Patches
- v.8x on Windows XP, Windows 2003– C:\Documents & Settings\All Users\Application Data\ Shavlik Technologies\NetChk\Patches
If you have changed the default directory, you can verify this by navigating within Protect under the following directory:
v.9x: Tools > Operations > Downloads > Patch download directory
v.8x: Tools > Options > Patch Downloads > Directory
If you want to manually check if the file is digitally signed:
- Right-click the file and click Properties.
- Click the Digital Signatures tab. If the file is signed, a Digital Signature exists. If the file is not signed, you do not see the Digital Signatures tab.
Products
Shavlik Protect 9.x
vCenter Protect 8.x