Ericsson is suspending its business in Russia indefinitely and has put employees on paid leave.
This comes six weeks after the Swedish telecom equipment maker started a review of the impact of Western sanctions on its operations in Russia.
The company said today it would record a 900 million crown ($95 million) provision in the first quarter for impairment of assets and other exceptional costs related to the move.
Ericsson has about 600 employees in Russia, a spokesperson said.
Hundreds of Western companies have either withdrawn or suspended operations in Russia since the country invaded Ukraine in February while Western governments have imposed sanctions.
Russian President Vladimir Putin sent his troops into Ukraine on what he calls a "special military operation" to demilitarise and "denazify" Ukraine.
Ukraine and the West say Putin launched an unprovoked war of aggression.
Ericsson had paused deliveries to customers in Russia in February, and rival Nokia did so in early March.
"Move was inevitable following a swathe of sanctions," said Paolo Pescatore, an analyst at PP Insights. "It will be a huge blow to both Ericsson and Nokia as they will not be paid for their networks."
The suspension will also hurt Ericsson's future plans in the country as Russia said last year it would extend telecoms operators' licences beyond 2023 for networks on the condition that they started building networks using only Russian equipment.
Ericsson does not have any manufacturing in Russia and its manufacturing hubs in Europe are in Estonia and Poland.
Nokia in November announced plans to set up a joint venture with YADRO, a leading Russian developer and producer of high-performance servers and storage systems, to build 4G and 5G telecom base stations in Russia.
Nokia said in a statement the company complies with all sanctions and restrictions and has suspended deliveries to Russia for the time being.
"Nokia will not continue R&D in Russia and we have already started the process of transferring R&D tasks outside of Russia," the company said.