[KB537] Undocumented Serious Error in ESET Windows home products

• Unable to update the detection engine in ESET Windows products for home
• You received an "Undocumented Serious Error 0x101a" error
• You received an "Undocumented Serious Error 0x1106" error
• Clear update cache
• Change Proxy mode to "Do not use proxy server"

Clear update cache

1. Open the main program window of your ESET Windows product.

2. Press the F5 key to open Advanced setup.

3. Click Update. Next to Clear update cache, click Clear and then click OK.

   Clear update cache is unavailable

   If the Clear update cache field is unavailable, restart your computer and attempt the process again.

   

Change Proxy mode to "Do not use proxy server"

1. Open the main program window of your ESET Windows product.

2. Press the F5 key to open Advanced setup.

3. Click Update, expand Profiles → Updates.

   

4. Expand Connection Options. In the Proxy mode drop-down menu, select Do not use proxy server and click OK.

   

5. Bookmark this article and then restart your computer.

6. After your computer has restarted, open the main program window of your ESET Windows product.

7. Click Update → Check for updates. Your ESET product should update automatically from now on. If the issue is not resolved, uninstall and then reinstall your ESET product.