The OP settings were generally correct except there were some missing spaces ensure the punctuation is correct when you cut and paste!
AndiW got it pert right "It is better to use the direct path C:\Program Files\TeXnicCenter\TeXnicCenter.exe." – AndiW
Just an update to confirm in SumatraPDF-settings.txt file the command needs to be the exact (quoted if needs be) path to TexnicCentre.exe followed by /ddecmd "[goto('%f', '%l')]" so a typical value (with " around TexnicCentre, when a path includes a space) may be
"C:\Program Files\TeXnicCenter\TeXnicCenter.exe" /ddecmd "[goto('%f', '%l')]"
Note this is the only case in SumatraPDF where a DDE command needs to be used (it is a TexnicCentre limitation to avoid dual start and may not support foreign filenames) you can add /nosplash but keep a space eitherside.
The latest advice is DO NOT USE DDE it is depreciated and may be modified in windows as a potential security problem. Also see its removal in other editors below.
DO NOT USE -INVERSE-SEARCH it is depreciated (it will delay the repeated calls)
DO NOT USE -REUSE-INSTANCE it is depreciated (it does not work the same way it used to)
Please stick to the original instructions in the first link they were updated for a reason and will be supported in this century. Or follow the cut down version here https://tex.stackexchange.com/a/453731/170109
To see why WinEdt recommend this method over the years since SumatraPDF forward/reverse search was first developed with that editor see the following extract from http://www.winedt.com/news.html
"•PDF macros no longer use DDE for SumatraPDF. Using the command line switch -forward-search is faster and more reliable. Using a command line switch (if it exists) is always preferable (simple is better). Besides DDE does not (and will not) support Unicode!"
The OP used a slightly different setting to that shown here.
The command is equally correct (better) if it is set to
-forward-search "%Wc" %l "%Bm.pdf"