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Proxy Server and IE9 Windows 7 – Certificate Error


You access HTTPS websites while using a proxy (Squid 3.1) and get a Certificate Error.  You get the error because the WINHTTP process cannot authenticate with the proxy server. WINHTTP is making  a Certificate lookup request to a CA.


  1. Lunch the Event Viewer -> Applications and Service Logs -> Microsoft -> Windows -> CAPI2 -> Right-click Operational  and Enable Log,
  2. Open the HTTPS website that is giving certificate error,
  3. Go back to the Event Viewer,
  4. Check which CA WINHTTP is trying to reach,
  5. Lookup the CAs IP range.


  1. Go to the proxy server,
  2. Set the IP range of the CA to no authentication with a filter exception.

Deleting VLAN config and VTP configuration in a Cisco device

To delete the VLAN config and VTP configuration run the following commands:

erase startup-config

delete flash:vlan.dat

Lotus Notes 8.5 – Default font change for all new messages

  1. In the Inbox view click New Message
  2. Click in the body area to activate Editing Toolbar
  3. Select the desired Font, Size and Color
  4. Go to Text -> Set Current Font as Default Mail
  5. Clock OK on the popup

Now all your new message will have the desired font, size and color

VMware – Removing unneeded driver after P2V conversion

To make a VM more stable it is recommended to delete drivers that were need to run on a physical server

Follow the steps bellow:

  1. In command prompt enter: set devmgr_show_nonpresent_devices=1
  2. From same command prompt enter: start %systemroot%\system32\devmgmt.msc
  3. In Device Manager, from the view menu, select Show Hidden Devices
  4. Remove devices that are clearly specific to the physical hardware.

Lotus Notes – “Document has been deleted” error message

Permanent Fix:

  1. Rename that Data folder under the user’s profile
  1. In domino console run the following commands:
    1. load compact mail\(username).nsf
    2. load fixup mail\(username).nsf
    3. load updall mail\(username).nsf
  1. Run Lotus Notes and create the users profile


Temporary Workaround:

  1. Close and reopen the Inbox tab (mail tab)
  2. If message in question still appears delete it

T-Mobile – Windows Phone Upgrade

If you want to upgrade the software on your T-Mobile Windows phone go to this website

Important  Note:

When upgrading the firmware on Windows Phones (6.5 and earlier) all your phone data will be lost. Before doing the actual upgrade make sure you backup all your data (contact, notes, etc.)!

Android – Check for new firmware updates

To force your android to check for new updates just dial *#*#checkin#*#*