Quick Fix: Unable to open image attachments in Outlook 2007/2010

If you receive an "unable to open document" error when attempting to open a .TIF file in Microsoft Outlook 2007 or 2010, it may be due to a limitation on the number of documents Windows can save in the "Temporary Internet Files/OLKE" folder. 

The limit for this folder seems to be 100 files, so after downloading your 100th attachment, you will be presented with this error message until you purge the contents of the folder.

In our case, the contents of the folder looked like this (as it was a fax mailbox):

fax.tif(97), fax.tif(98) and fax.tif(99)

In order to resolve this issue, you need to go and delete some of these files using the following steps:

  • Find the location of the folder in which these files are stored by navigating to the registry (Start, Run, RegEdit) and finding the following key:  HKEY_CURRENT_USER > Software > Microsoft > Office > 14.0 > Outlook > Security > Value Name: OutlookSecureTempFolder > Value Type: REG_SZ > Value Data: Temporary Internet Files
  • Copy the value to an explorer window, delete all files in the folder.
     For Example: 'C:\Documents and Settings\user name\LOCAL Settings\Temporary Internet Files\OLK18F'

N.B: The exact registry location will vary depending on your version of Windows. See below for an example on Windows 7.

Outlook 2010 Temporary File Location

Once you've deleted these files, restart Outlook and the problem should be resolved.

If you need more help, the official Microsoft knowledgebase article covering this issue can be found here.

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Importing CSV to Excel

This guide covers importing a CSV file into a blank worksheet using Microsoft Excel 2007.  Don't open the CSV in Excel, instead create a new workbook, click on the data tab on the ribbon and select 'Get External Data', 'From Text'. Test
Select 'delimited' if your data is seperated with a specific character. You'll have to specify the delimiting character on the next step. If you have a header row, enter a value for 'Start Import at row...' Step 2
Click 'Next' and select your delimiting character. In this case, it's a semi-colon ';' Delimiting character
If you wish to shape your data, you can enter field types here. For example, I want the 'Barcode' field to be rendered as Text as it may contain leading zeros or be summarised by Excel if it's treated as a number. Next, select your existing worksheet and press OK to import your data.
Finish the process

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