Tag Archives: Microsoft

Microsoft Outlook blocks more extensions

Microsoft Outlook blocks more extensions – 38 extensions added

Microsoft Outlook Blocks

Electronic communication is an intergral part of an enterprise’s infrastructure.

Microsoft Outlook blocks more extensions that can no longer be attached as email attachments.  When communicating with others, files often need to be sent.  If they fall into this list, and the recipient is an Outlook user they will not be able to access these attachments.

The new ones to be added are are:

  • Java files: “.jar”, “.jnlp”
  • Python files: “.py”, “.pyc”, “.pyo”, “.pyw”, “.pyz”, “.pyzw”
  • PowerShell files: “.ps1”, “.ps1xml”, “.ps2”, “.ps2xml”, “.psc1”, “.psc2”, “.psd1”, “.psdm1”, “.psd1”, “.psdm1”
  • Digital certificates: “.cer”, “.crt”, “.der”
  • Files used to exploit vulnerabilities in third-party software: “.appcontent-ms”, “.settingcontent-ms”, “.cnt”, “.hpj”, “.website”, “.webpnp”, “.mcf”, “.printerexport”, “.pl”, “.theme”, “.vbp”, “.xbap”, “.xll”, “.xnk”, “.msu”, “.diagcab”, “.grp”

There currently 104 extensions that are blocked.  The new total of extenstions that will be blocked will be upped to 142.  The current list includes:

  • .ade – Access Project Extension (Microsoft)
  • .adp – Access Project (Microsoft)
  • .app – Executable Application
  • .asp – Active Server Page
  • .bas – BASIC Source Code
  • .bat – Batch Processing
  • .cer – Internet Security Certificate File
  • .chm – Compiled HTML Help
  • .cmd – DOS CP/M Command File –  Command File for Windows NT
  • .cnt – Microsoft Help Workshop Application
  • .com – Command
  • .cpl – Windows Control Panel Extension (Microsoft)
  • .crt – Certificate File
  • .csh – csh Script
  • .der – DER Encoded X509 Certificate File
  • .diagcab – Microsoft Support diagnostic tools
  • .exe – Executable File
  • .fxp – FoxPro Compiled Source (Microsoft)
  • .gadget – Windows Vista gadget
  • .grp – Microsoft program group
  • .hlp – Windows Help File
  • .hpj – AppWizard Help project
  • .hta – Hypertext Application
  • .inf – Information or Setup File
  • .ins – IIS Internet Communications Settings (Microsoft)
  • .isp – IIS Internet Service Provider Settings (Microsoft)
  • .its – “Internet Document Set –  Internet Translation”
  • .jar – Java Archive
  • .jnlp – Java Network Launch Protocol
  • .js – JavaScript Source Code
  • .jse – JScript Encoded Script File
  • .ksh – UNIX Shell Script
  • .lnk – Windows Shortcut File
  • .mad – Access Module Shortcut (Microsoft)
  • .maf – Access (Microsoft)
  • .mag – Access Diagram Shortcut (Microsoft)
  • .mam – Access Macro Shortcut (Microsoft)
  • .maq – Access Query Shortcut (Microsoft)
  • .mar – Access Report Shortcut (Microsoft)
  • .mas – Access Stored Procedures (Microsoft)
  • .mat – Access Table Shortcut (Microsoft)
  • .mau – Media Attachment Unit
  • .mav – Access View Shortcut (Microsoft)
  • .maw – Access Data Access Page (Microsoft)
  • .mcf – Media Container Format
  • .mda – “Access Add-in (Microsoft) –  MDA Access 2 Workgroup (Microsoft)”
  • .mdb – “Access Application (Microsoft) –  MDB Access Database (Microsoft)”
  • .mde – Access MDE Database File (Microsoft)
  • .mdt – Access Add-in Data (Microsoft)
  • .mdw – Access Workgroup Information (Microsoft)
  • .mdz – Access Wizard Template (Microsoft)
  • .msc – Microsoft Management Console Snap-in Control File (Microsoft)
  • .msh – Microsoft Shell
  • .msh1 – Microsoft Shell
  • .msh2 – Microsoft Shell
  • .mshxml – Microsoft Shell
  • .msh1xml – Microsoft Shell
  • .msh2xml – Microsoft Shell
  • .msi – Windows Installer File (Microsoft)
  • .msp – Windows Installer Update
  • .mst – Windows SDK Setup Transform Script
  • .msu – Windows Update file
  • .ops – Office Profile Settings File
  • .osd – Open Software Description
  • .pcd – Visual Test (Microsoft)
  • .pif – Windows Program Information File (Microsoft)
  • .pl – Perl script
  • .plg – Developer Studio Build Log
  • .prf – Windows System File
  • .prg – Program File
  • .printerexport – Printer backup file
  • .ps1 – Windows PowerShell
  • .ps1xml – Windows PowerShell
  • .ps2 – Windows PowerShell
  • .ps2xml – Windows PowerShell
  • .psc1 – Windows PowerShell
  • .psc2 – Windows PowerShell
  • .psd1 – Windows PowerShell
  • .psdm1 – Windows PowerShell
  • .pst – MS Exchange Address Book File – Outlook Personal Folder File (Microsoft)
  • .reg – Registration Information/Key for W95/98 – Registry Data File
  • .scf – Windows Explorer Command
  • .scr – Windows Screen Saver
  • .sct – “Windows Script Component –  Foxpro Screen (Microsoft)”
  • .shb – Windows Shortcut into a Document
  • .shs – Shell Scrap Object File
  • .theme – Desktop theme file settings
  • .tmp – Temporary File/Folder
  • .url – Internet Location
  • .vb – VBScript File or Any Visual Basic Source
  • .vbe – VBScript Encoded Script File
  • .vbp – Visual Basic project file
  • .vbs – VBScript Script File – Visual Basic for Applications Script
  • .vsmacros – Visual Studio .NET Binary-based Macro Project (Microsoft)
  • .vsw – Visio Workspace File (Microsoft)
  • .webpnp – Internet printing file
  • .website – Pinned site shortcut from Internet Explorer
  • .ws – Windows Script File
  • .wsc – Windows Script Component
  • .wsf – Windows Script File
  • .wsh – Windows Script Host Settings File
  • .xbap – Browser applications
  • .xll – Excel add-in
  • .xnk – Exchange Public Folder Shortcut



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AnyConnect Windows 10

AnyConnect Windows 10 Fail

AnyConnect Windows 10 fails with the newest version of the VPN client software.  After a windows update we encountered a problem when we wanted to connect to our VPN.

Patch Management and Version Control Policy

Patch management and version control policy needs to be reviewed in light of issues like AnyConnect Windows 10 failure.

The symptoms were the service was running on the client  PC (Windows 10 Pro 64 bit) and when we went to run AnyConnect, the hour class would appear but we did not get the dialog to connect to the firewall.  We also noticed there was a Microsoft update that occurred since the last time we used the program.

Based on suggestions from our provider, we uninstalled the current version the program, rebooted the client and reinstalled the current version.  The same problem occurred as before. We searched the internet, including Cisco’s trouble shooting suggestions. We found no solution, rather we see that there were a number of instances where AnyConnect Windows 10 failed.

The  problem did not exist before the update by windows.  We then did the following to fix the problem.

  • Uninstalled the current version of the program
  • Rebooted the client with a power on and off
  • Installed a prior version that worked on the client
  • Ran the program and the dialog to set up the connection came up
  • The program did an automatic update to the current version
  • AnyConnect then worked

What caused the problem

We think that with the Microsoft update some registry entry or other setting was altered or removed. The re-installation of the program with the current version did not correct the issue.  When we installed an earlier version the setting was correctly added or modified.

Lessons Learned

As a best practice, versions of programs and updates should be saved. With the constant updates by both hardware and software vendors the chance of a similar problem  occurring are high. When it is time to solve a problem,  the vendors often lack easily obtainable solutions. In our case when we talked to our providers help desk, their repsonse was that was an interesting problem and they would communicate it to Cisco if they saw several customers with the same problem.  Ergo Cisco does not know the problem exists so they will not fix the offending software.

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