If the adhesive is on top of the tile, scrape as much as you can with a spatula. Then remove residue with the solvent for that adhesive.
Goof Off will do this.
If the vinyl adhesive is hard and has no lumps then you can, but use a compatible adhesive, not thinset cement.
Try Goo Gone first, then acetone if that doesn't work.
The best way to remove peel and stick vinyl tiles is with a heat gun. It loosens the adhesive and allows them to be easily removed in one piece.
yellowing in vinyl usually means the plasticizes in the product have reacted to something ie. water or solvent. this yellowing can not be removed sorry.
Cannot be answered without further information. What is the adhesive? Are you under water or dry? Is it a tile or marcite surface? Please asvise
My man installs floors. He said Mineral Spirits will remove any residue without damaging your new finish.
You will have to use a solvent. Try Goof-Off, the water based type might work and will do the least damage to the vinyl trim. All harsh solvents will damage vinyl.
Vinyl Wallpaper Adhesive. I know Zinsser makes it, and there are other brands.