Hi Adrian Komiński 

This issue was fixed in CU8 released last year. I have the later updates installed on mine but it still works. FYI I tested with SR1 14.1.10011. 20356. I hope this helps.

Thanks,
Naoko

Thanks for the response. I wish it was fixed, because it certainly doesn't seem to be on my end. I have the exact same build as you. Yesterday the function somehow started magically working - with any project. Today it won't work again - also with any project, despite restarting the application and the PC. Same error as before. I could try reinstalling Office, but I want to get on this hassle only after trying everything else.

Any further help, please? This was one of the reasons I even bought this thing in place of MemoQ, and now it's disappointing me from the very beginning… Though I do realize it might be yet another issue with a Microsoft product.

EDIT: the external ("Microsoft Word") real-time preview does work. 

I tried with the same projects and some other ones, nothing worked (whereas yesterday everything worked). I tried the solution from your link (elevating the priority of the file type [sounds like a strange bit of software engineering anyway]), but didn't help.

I obviously have the latest build. I just purchased and downloaded the software on Friday and did all the updates straight away.

I'm currently working with the external preview function, which in itself wouldn't be bad if not for the fact that the yellow highlight indicating the position in the document is acting up - it often blinks oddly, marks and unmarks text, or disappears entirely and reappears after switching a segment. Not sure if this is a separate issue, but it gives one hell of a bad impression as to Trados's stability.

MemoQ's HTML preview was useless, but at least worked every time. Much like the preview in Trados 2011.

I tried with the same projects and some other ones, nothing worked (whereas yesterday everything worked). I tried the solution from your link (elevating the priority of the file type [sounds like a strange bit of software engineering anyway]), but didn't help.

I obviously have the latest build. I just purchased and downloaded the software on Friday and did all the updates straight away.

I'm currently working with the external preview function, which in itself wouldn't be bad if not for the fact that the yellow highlight indicating the position in the document is acting up - it often blinks oddly, marks and unmarks text, or disappears entirely and reappears after switching a segment. Not sure if this is a separate issue, but it gives one hell of a bad impression as to Trados's stability.

MemoQ's HTML preview was useless, but at least worked every time. Much like the preview in Trados 2011.

Okay, I guess I'll use the support channel suggested (I don't have a support contract), thank you.

For future reference, though (and in case somebody still feels like he/she can help):

My Office is "Professional Plus 2016" - a one-off purchase license, I'm not even sure what click-to-run is

Microsoft (R) Word MSO (16.0.10228.20080) - Version 1806, Quick Install, Monthly channel

(I don't know why it says "monthly channel", I don't have any renewing subscription and such)