OpenVPN: Error: IP packet with unknown IP version

Hi,

this is a checklist for the error on an OpenVPN 2.4 Server “IP packet with unknown IP version” when a client has established a connection successfully but you can not reach any IP Addresses in the network.
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Excel: Does not start within a schedule task

Hi,

if you have already created a script and within you do some things with Excel by DCOM Excel.Application the script runs well as a user logged to the Desktop but not within a schedule task started by the same user.

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Windows: Decode Win32 Error codes

Hi,

if you have a Windows Errorcode like 0xc000021a and want to decode it to a human readable format you can use certutil.
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Linux: mount.cifs failed with host is down

Hi,

due to some security issues (Wannacry) Windows administrators are going to disable the unsecure smb1 protocol.

mount.cifs is using smb1 by default. So when you tried to connect to a Windows machine where smb1 is disabled you get an error: mount error(112): Host is down.
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Windows: Clipboard not working

Hi,

when have opened a Remote Desktop Connection it sometimes happened that the clipboard stops working.

When you closing and reestablish the Remote Desktop Connection the clipboard functionally comes back.

But its also possible without closing the RDP Session:
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