Cannot turn on P2P services

[Basil]

I have a Win7 64 bit PC on which I have recently found I cannot turn on P2P services, it comes up with an error and I am unable to see the Homegroup password. I believe it was always accessed on my wired home network as a Workgroup though. A newly built similar OS PC can see the printers and the router, but no files. File sharing is on on both PC's. I am a network dummy but suspect the inability to start the P2P services may be the issue. is there a fairly straightforward way to fix this please? Thanks I also want to access the PC's from a laptop running XP SP3, which is why I think I originally had it using WORKGROUP.

 

[samuria]

Have used home group or workgroup as do can't use home group as you need ipv6 running

 

[Basil]

Thanks, it must have been as I thought and I was using WORKGROUP as the Win7 PC upstairs could share files with my XP laptop downstairs before something broke! I am seeing this error on the upstairs Win7 PC:



Either the Peer Name Resolution Protocol service (PNRPsvc) or the Peer Networking Identity Manager service (p2pimsvc) is not running Not fixed
The Peer Networking Grouping service (p2psvc) depends on both these services in order to function properly




I have tried all the fixes here: Windows Could Not the Start Peer Networking Grouping Service on Local Computer - MajorGeeks


Still three of the four dependent Services will not start. I have seen more drstic ideas in several places but they do indeeed sound DRASTIC to me... Any automated way to attempt more repairs?

 

[Basil]

For the record I continued Googling and found a link suggesting a file may be corrupt and to rename it and allow it to be recreated on a re-boot. This instantly fixed things.