Hello,

Recently we migrated our Windows Server 2008 R2 terminal server to a Windows Server 2012 R2 terminal server farm. We used Office 2010 on the Server 2008 R2 server and we did not upgrade to Office 2013 on 2012 R2.

However since we migrated our users over there have been several users reporting that their excel workbooks would disappear from the taskbar every now and then. For example a user has 2 workbooks open (in one session) and both are showing up on the taskbar. Then complete random so it seems there is only 1 workbook showing on the taskbar (the active one) and all the other workbooks look to be closed. But when the user starts minimizing their sheets and alt tabbing around all of a sudden the workbooks reappear on the taskbar.

I have already tried a full repair of Office 2010 but this did not work. Since we could not get a grip on this issue we tested this at another environment which also uses Office 2010 and Windows Server 2012 R2. The issue happens there also so it looks like it is a bug when using Office 2010 on 2012 R2.

Is anyone else also having this problem and maybe have a solution for it?

Regards,

Dave

Hi,

According to your description, my understanding is that the multiple Office files icon have combined to one icon in taskbar. Am I right? If yes, this issue is caused by selecting the "Always Combine" option, please right-click taskbar=> Properties=>Taskbar buttons is set to Never Combine.

If not, please upload a screenshot, we can know this issue more cleanly.

Regards,

Hello George,

Thank you for your reply. 

This is not the case. Normally when I have multiple Excel files opened I can see them on my taskbar, either as multiple occurences when "never combine" is enabled or as 1 item on the taskbar combined (with the ability to click on the combined "tree" of excel files and choose which file I want to see). 

However the problem is that sometimes only 1 Excel sheet is visible on the taskbar (the active one). This is the case either with "Never combine" or "Always combine". This happens at random. After minimizing and maximizing the active Excel sheet a few times or switch between programs usually the "hidden" excel sheets magically appear again on the taskbar without any settings being changed in this time.

Since it happens randomly and I cannot reproduce the problem most of the times I do not have a screenshot to show what I mean.

Regards,

Dave